Exemple #1
0
    def __init__(self, N):
        self.N = N

        # Generate some random bits
        #rndm = random.Random()
        #rndm.seed(0)
        self.coding = 1
        self.interleave = 0
        self.fo = ofdm.fsm(1, 2, [91, 121])
Exemple #2
0
    def __init__(self, N):
        self.N = N
        

        # Generate some random bits
        #rndm = random.Random()
        #rndm.seed(0)
        self.coding = 1
        self.interleave = 0
        self.fo=ofdm.fsm(1,2,[91,121])
  def __init__(self, options):
    gr.hier_block2.__init__(self, "fbmc_receive_path",
        gr.io_signature(1,1,gr.sizeof_gr_complex),
        gr.io_signature(0,0,0))

    print "This is  FBMC receive path 1x1"

    common_options.defaults(options)

    config = self.config = station_configuration()

    config.data_subcarriers     = dsubc = options.subcarriers
    config.cp_length            = 0
    config.frame_data_blocks    = options.data_blocks
    config._verbose             = options.verbose #TODO: update
    config.fft_length           = options.fft_length
    config.dc_null             = options.dc_null
    config.training_data        = default_block_header(dsubc,
                                          config.fft_length,config.dc_null,options)
    config.coding              = options.coding
    config.ber_window           = options.ber_window

    config.periodic_parts       = 8

    config.frame_id_blocks      = 1 # FIXME

    self._options               = copy.copy(options) #FIXME: do we need this?
    
    config.fbmc                 = options.fbmc

    

    config.block_length = config.fft_length + config.cp_length
    config.frame_data_part = config.frame_data_blocks + config.frame_id_blocks
    config.frame_length = config.training_data.fbmc_no_preambles + 2*config.frame_data_part 
    
    config.postpro_frame_length = config.frame_data_part + \
                          config.training_data.no_pilotsyms
    config.subcarriers = dsubc + \
                         config.training_data.pilot_subcarriers
    config.virtual_subcarriers = config.fft_length - config.subcarriers - config.dc_null

    total_subc = config.subcarriers
    


    # check some bounds
    if config.fft_length < config.subcarriers:
      raise SystemError, "Subcarrier number must be less than FFT length"
    if config.fft_length < config.cp_length:
      raise SystemError, "Cyclic prefix length must be less than FFT length"



    #self.input =  gr.kludge_copy(gr.sizeof_gr_complex)
    #self.connect( self, self.input )
    self.input = self
    self.ideal = options.ideal
    self.ideal2 = options.ideal2


    ## Inner receiver

    ## Timing & Frequency Synchronization
    ## Channel estimation + Equalization
    ## Phase Tracking for sampling clock frequency offset correction
    inner_receiver = self.inner_receiver = fbmc_inner_receiver( options, options.log )
    self.connect( self.input, inner_receiver )
    ofdm_blocks = ( inner_receiver, 2 )
    frame_start = ( inner_receiver, 1 )
    disp_ctf = ( inner_receiver, 0 )
    #self.snr_est_preamble = ( inner_receiver, 3 )
    #terminate_stream(self,snr_est_preamble)
    disp_cfo =  ( inner_receiver, 3 )
    
    if self.ideal is False and self.ideal2 is False:
        self.zmq_probe_freqoff = zeromq.pub_sink(gr.sizeof_float, 1, "tcp://*:5557")
        self.connect(disp_cfo, self.zmq_probe_freqoff)
    else:
        self.connect(disp_cfo, blocks.null_sink(gr.sizeof_float))




    # for ID decoder
    used_id_bits = config.used_id_bits = 8 #TODO: constant in source code!
    rep_id_bits = config.rep_id_bits = dsubc/used_id_bits #BPSK
    if options.log:
      print "rep_id_bits %d" % (rep_id_bits)
    if dsubc % used_id_bits <> 0:
      raise SystemError,"Data subcarriers need to be multiple of 10"

    ## Workaround to avoid periodic structure
    seed(1)
    whitener_pn = [randint(0,1) for i in range(used_id_bits*rep_id_bits)]





    ## NOTE!!! BIG HACK!!!
    ## first preamble ain't equalized ....
    ## for Milan's SNR estimator






    ## Outer Receiver

    ## Make new inner receiver compatible with old outer receiver
    ## FIXME: renew outer receiver

    self.ctf = disp_ctf

    #frame_sampler = ofdm_frame_sampler(options)
    frame_sampler = fbmc_frame_sampler(options)

    self.connect( ofdm_blocks, frame_sampler)
    self.connect( frame_start, (frame_sampler,1) )


#
#    ft = [0] * config.frame_length
#    ft[0] = 1
#
#    # The next block ensures that only complete frames find their way into
#    # the old outer receiver. The dynamic frame start trigger is hence
#    # replaced with a static one, fixed to the frame length.
#
#    frame_sampler = ofdm.vector_sampler( gr.sizeof_gr_complex * total_subc,
#                                              config.frame_length )
#    self.symbol_output = blocks.vector_to_stream( gr.sizeof_gr_complex * total_subc,
#                                              config.frame_length )
#    delayed_frame_start = blocks.delay( gr.sizeof_char, config.frame_length - 1 )
#    damn_static_frame_trigger = blocks.vector_source_b( ft, True )
#
#    if options.enable_erasure_decision:
#      frame_gate = vector_sampler(
#        gr.sizeof_gr_complex * total_subc * config.frame_length, 1 )
#      self.connect( ofdm_blocks, frame_sampler, frame_gate,
#                    self.symbol_output )
#    else:
#      self.connect( ofdm_blocks, frame_sampler, self.symbol_output )
#
#    self.connect( frame_start, delayed_frame_start, ( frame_sampler, 1 ) )

    if options.enable_erasure_decision:
      frame_gate = frame_sampler.frame_gate

    self.symbol_output = frame_sampler

    orig_frame_start = frame_start
    frame_start = (frame_sampler,1)
    self.frame_trigger = frame_start
    #terminate_stream(self, self.frame_trigger)








    ## Pilot block filter
    pb_filt = self._pilot_block_filter = fbmc_pilot_block_filter()
    self.connect(self.symbol_output,pb_filt)
    self.connect(self.frame_trigger,(pb_filt,1))

    self.frame_data_trigger = (pb_filt,1)
    
    #self.symbol_output = pb_filt
    

    #if options.log:
      #log_to_file(self, pb_filt, "data/pb_filt_out.compl")


    if config.fbmc:
        pda_in = pb_filt

    else:
        ## Pilot subcarrier filter
        ps_filt = self._pilot_subcarrier_filter = pilot_subcarrier_filter()
        self.connect(self.symbol_output,ps_filt)

        if options.log:
            log_to_file(self, ps_filt, "data/ps_filt_out.compl")
            
        pda_in = ps_filt

    


    ## Workaround to avoid periodic structure
    # for ID decoder
    seed(1)
    whitener_pn = [randint(0,1) for i in range(used_id_bits*rep_id_bits)]

    

    if not options.enable_erasure_decision:

      ## ID Block Filter
      # Filter ID block, skip data blocks
      id_bfilt = self._id_block_filter = vector_sampler(
            gr.sizeof_gr_complex * dsubc, 1 )
      if not config.frame_id_blocks == 1:
        raise SystemExit, "# ID Blocks > 1 not supported"

      self.connect(   pda_in     ,   id_bfilt      )
      self.connect( self.frame_data_trigger, ( id_bfilt, 1 ) ) # trigger

      #log_to_file( self, id_bfilt, "data/id_bfilt.compl" )

      ## ID Demapper and Decoder, soft decision
      self.id_dec = self._id_decoder = ofdm.coded_bpsk_soft_decoder( dsubc,
          used_id_bits, whitener_pn )
      self.connect( id_bfilt, self.id_dec )
      

      print "Using coded BPSK soft decoder for ID detection"


    else: # options.enable_erasure_decision:

      id_bfilt = self._id_block_filter = vector_sampler(
        gr.sizeof_gr_complex * total_subc, config.frame_id_blocks )

      id_bfilt_trig_delay = 0
      for x in range( config.frame_length ):
        if x in config.training_data.pilotsym_pos:
          id_bfilt_trig_delay += 1
        else:
          break
      print "Position of ID block within complete frame: %d" %(id_bfilt_trig_delay)

      assert( id_bfilt_trig_delay > 0 ) # else not supported

      id_bfilt_trig = blocks.delay( gr.sizeof_char, id_bfilt_trig_delay )

      self.connect( ofdm_blocks, id_bfilt )
      self.connect( orig_frame_start, id_bfilt_trig, ( id_bfilt, 1 ) )

      self.id_dec = self._id_decoder = ofdm.coded_bpsk_soft_decoder( total_subc,
          used_id_bits, whitener_pn, config.training_data.shifted_pilot_tones )
      self.connect( id_bfilt, self.id_dec )

      print "Using coded BPSK soft decoder for ID detection"

      # The threshold block either returns 1.0 if the llr-value from the
      # id decoder is below the threshold, else 0.0. Hence we convert this
      # into chars, 0 and 1, and use it as trigger for the sampler.

      min_llr = ( self.id_dec, 1 )
      erasure_threshold = gr.threshold_ff( 10.0, 10.0, 0 ) # FIXME is it the optimal threshold?
      erasure_dec = gr.float_to_char()
      id_gate = vector_sampler( gr.sizeof_short, 1 )
      ctf_gate = vector_sampler( gr.sizeof_float * total_subc, 1 )


      self.connect( self.id_dec ,       id_gate )
      self.connect( self.ctf,      ctf_gate )

      self.connect( min_llr,       erasure_threshold,  erasure_dec )
      self.connect( erasure_dec, ( frame_gate, 1 ) )
      self.connect( erasure_dec, ( id_gate,    1 ) )
      self.connect( erasure_dec, ( ctf_gate,   1 ) )

      self.id_dec = self._id_decoder = id_gate
      self.ctf = ctf_gate



      print "Erasure decision for IDs is enabled"




    if options.log:
      id_dec_f = gr.short_to_float()
      self.connect(self.id_dec,id_dec_f)
      log_to_file(self, id_dec_f, "data/id_dec_out.float")


    if options.log:
      log_to_file(self, id_bfilt, "data/id_blockfilter_out.compl")


    # TODO: refactor names




    if options.log:
      map_src_f = gr.char_to_float(dsubc)
      self.connect(map_src,map_src_f)
      log_to_file(self, map_src_f, "data/map_src_out.float")

    ## Allocation Control
    if options.static_allocation: #DEBUG
        
        if options.coding:
            mode = 1 # Coding mode 1-9
            bitspermode = [0.5,1,1.5,2,3,4,4.5,5,6] # Information bits per mode
            bitcount_vec = [(int)(config.data_subcarriers*config.frame_data_blocks*bitspermode[mode-1])]
            bitloading = mode
        else:
            bitloading = 1
            bitcount_vec = [config.data_subcarriers*config.frame_data_blocks*bitloading]
        #bitcount_vec = [config.data_subcarriers*config.frame_data_blocks]
        self.bitcount_src = blocks.vector_source_i(bitcount_vec,True,1)
        # 0s for ID block, then data
        #bitloading_vec = [0]*dsubc+[0]*(dsubc/2)+[2]*(dsubc/2)
        bitloading_vec = [0]*dsubc+[bitloading]*dsubc
        bitloading_src = blocks.vector_source_b(bitloading_vec,True,dsubc)
        power_vec = [1]*config.data_subcarriers
        power_src = blocks.vector_source_f(power_vec,True,dsubc)
    else:
        self.allocation_buffer = ofdm.allocation_buffer(config.data_subcarriers, config.frame_data_blocks, "tcp://"+options.tx_hostname+":3333",config.coding)
        self.bitcount_src = (self.allocation_buffer,0)
        bitloading_src = (self.allocation_buffer,1)
        power_src = (self.allocation_buffer,2)
        self.connect(self.id_dec, self.allocation_buffer)
        if options.benchmarking:
            self.allocation_buffer.set_allocation([4]*config.data_subcarriers,[1]*config.data_subcarriers)

    if options.log:
        log_to_file(self, self.bitcount_src, "data/bitcount_src_rx.int")
        log_to_file(self, bitloading_src, "data/bitloading_src_rx.char")
        log_to_file(self, power_src, "data/power_src_rx.cmplx")
        log_to_file(self, self.id_dec, "data/id_dec_rx.short")

    ## Power Deallocator
    pda = self._power_deallocator = multiply_frame_fc(config.frame_data_part, dsubc)
    self.connect(pda_in,(pda,0))
    self.connect(power_src,(pda,1))

    ## Demodulator
#    if 0:
#          ac_vector = [0.0+0.0j]*208
#          ac_vector[0] = (2*10**(-0.452))
#          ac_vector[3] = (10**(-0.651))
#          ac_vector[7] = (10**(-1.151))
#          csi_vector_inv=abs(numpy.fft.fft(numpy.sqrt(ac_vector)))**2
#          dm_csi = numpy.fft.fftshift(csi_vector_inv) # TODO

    dm_csi = [1]*dsubc # TODO
    dm_csi = blocks.vector_source_f(dm_csi,True)
    ## Depuncturer
    dp_trig = [0]*(config.frame_data_blocks/2)
    dp_trig[0] = 1
    dp_trig = blocks.vector_source_b(dp_trig,True) # TODO



    if(options.coding):
        fo=ofdm.fsm(1,2,[91,121])
        if options.interleave:
            int_object=trellis.interleaver(2000,666)
            deinterlv = trellis.permutation(int_object.K(),int_object.DEINTER(),1,gr.sizeof_float)
        
        demod = self._data_demodulator = generic_softdemapper_vcf(dsubc, config.frame_data_part, config.coding)
        #self.connect(dm_csi,blocks.stream_to_vector(gr.sizeof_float,dsubc),(demod,2))
        if(options.ideal):
            self.connect(dm_csi,blocks.stream_to_vector(gr.sizeof_float,dsubc),(demod,2))
        else:
            dm_csi_filter = self.dm_csi_filter = filter.single_pole_iir_filter_ff(0.01,dsubc)
            self.connect(self.ctf, self.dm_csi_filter,(demod,2))
            #log_to_file(self, dm_csi_filter, "data/softs_csi.float")
        #self.connect(dm_trig,(demod,3))
    else:
        demod = self._data_demodulator = generic_demapper_vcb(dsubc, config.frame_data_part)
    if options.benchmarking:
        # Do receiver benchmarking until the number of frames x symbols are collected
        self.connect(pda,blocks.head(gr.sizeof_gr_complex*dsubc, options.N*config.frame_data_blocks),demod)
    else:        
        self.connect(pda,demod)
    self.connect(bitloading_src,(demod,1))

    if(options.coding):
        ## Depuncturing
        if not options.nopunct:
            depuncturing = depuncture_ff(dsubc,0)
            frametrigger_bitmap_filter = blocks.vector_source_b([1,0],True)
            self.connect(bitloading_src,(depuncturing,1))
            self.connect(dp_trig,(depuncturing,2))

        ## Decoding
        chunkdivisor = int(numpy.ceil(config.frame_data_blocks/5.0))
        print "Number of chunks at Viterbi decoder: ", chunkdivisor
        decoding = self._data_decoder = ofdm.viterbi_combined_fb(fo,dsubc,-1,-1,2,chunkdivisor,[-1,-1,-1,1,1,-1,1,1],ofdm.TRELLIS_EUCLIDEAN)

        
        if options.log and options.coding:
            log_to_file(self, decoding, "data/decoded.char")
            if not options.nopunct:
                log_to_file(self, depuncturing, "data/vit_in.float")

        if not options.nopunct:
            if options.interleave:
                self.connect(demod,deinterlv,depuncturing,decoding)
            else:
                self.connect(demod,depuncturing,decoding)
        else:
            self.connect(demod,decoding)
        self.connect(self.bitcount_src, multiply_const_ii(1./chunkdivisor), (decoding,1))

    if options.scatterplot or options.scatter_plot_before_phase_tracking:
        if self.ideal2 is False:
            scatter_vec_elem = self._scatter_vec_elem = ofdm.vector_element(dsubc,40)
            scatter_s2v = self._scatter_s2v = blocks.stream_to_vector(gr.sizeof_gr_complex,config.frame_data_blocks)
    
            scatter_id_filt = skip(gr.sizeof_gr_complex*dsubc,config.frame_data_blocks)
            scatter_id_filt.skip_call(0)
            scatter_trig = [0]*config.frame_data_part
            scatter_trig[0] = 1
            scatter_trig = blocks.vector_source_b(scatter_trig,True)
            self.connect(scatter_trig,(scatter_id_filt,1))
            self.connect(scatter_vec_elem,scatter_s2v)
    
            if not options.scatter_plot_before_phase_tracking:
                print "Enabling Scatterplot for data subcarriers"
                self.connect(pda,scatter_id_filt,scatter_vec_elem)
                  # Work on this
                  #scatter_sink = ofdm.scatterplot_sink(dsubc)
                  #self.connect(pda,scatter_sink)
                  #self.connect(map_src,(scatter_sink,1))
                  #self.connect(dm_trig,(scatter_sink,2))
                  #print "Enabled scatterplot gui interface"
                self.zmq_probe_scatter = zeromq.pub_sink(gr.sizeof_gr_complex,config.frame_data_blocks, "tcp://*:5560")
                self.connect(scatter_s2v, blocks.keep_one_in_n(gr.sizeof_gr_complex*config.frame_data_blocks,20), self.zmq_probe_scatter)
            else:
                print "Enabling Scatterplot for data before phase tracking"
                inner_rx = inner_receiver.before_phase_tracking
                #scatter_sink2 = ofdm.scatterplot_sink(dsubc,"phase_tracking")
                op = copy.copy(options)
                op.enable_erasure_decision = False
                new_framesampler = ofdm_frame_sampler(op)
                self.connect( inner_rx, new_framesampler )
                self.connect( orig_frame_start, (new_framesampler,1) )
                new_ps_filter = pilot_subcarrier_filter()
                new_pb_filter = fbmc_pilot_block_filter()
    
                self.connect( (new_framesampler,1), (new_pb_filter,1) )
                self.connect( new_framesampler, new_pb_filter,
                             new_ps_filter, scatter_id_filt, scatter_vec_elem )
    
                #self.connect( new_ps_filter, scatter_sink2 )
                #self.connect( map_src, (scatter_sink2,1))
                #self.connect( dm_trig, (scatter_sink2,2))


    if options.log:
      if(options.coding):
          log_to_file(self, demod, "data/data_stream_out.float")
      else:
          data_f = gr.char_to_float()
          self.connect(demod,data_f)
          log_to_file(self, data_f, "data/data_stream_out.float")



    if options.sfo_feedback:
      used_id_bits = 8
      rep_id_bits = config.data_subcarriers/used_id_bits

      seed(1)
      whitener_pn = [randint(0,1) for i in range(used_id_bits*rep_id_bits)]

      id_enc = ofdm.repetition_encoder_sb(used_id_bits,rep_id_bits,whitener_pn)
      self.connect( self.id_dec, id_enc )

      id_mod = ofdm_bpsk_modulator(dsubc)
      self.connect( id_enc, id_mod )

      id_mod_conj = gr.conjugate_cc(dsubc)
      self.connect( id_mod, id_mod_conj )

      id_mult = blocks.multiply_vcc(dsubc)
      self.connect( id_bfilt, ( id_mult,0) )
      self.connect( id_mod_conj, ( id_mult,1) )

#      id_mult_avg = filter.single_pole_iir_filter_cc(0.01,dsubc)
#      self.connect( id_mult, id_mult_avg )

      id_phase = gr.complex_to_arg(dsubc)
      self.connect( id_mult, id_phase )

      log_to_file( self, id_phase, "data/id_phase.float" )

      est=ofdm.LS_estimator_straight_slope(dsubc)
      self.connect(id_phase,est)

      slope=blocks.multiply_const_ff(1e6/2/3.14159265)
      self.connect( (est,0), slope )

      log_to_file( self, slope, "data/slope.float" )
      log_to_file( self, (est,1), "data/offset.float" )

    # ------------------------------------------------------------------------ #




    # Display some information about the setup
    if config._verbose:
      self._print_verbage()

    ## debug logging ##
    if options.log:
#      log_to_file(self,self.ofdm_symbols,"data/unequalized_rx_ofdm_symbols.compl")
#      log_to_file(self,self.ofdm_symbols,"data/unequalized_rx_ofdm_symbols.float",mag=True)


      fftlen = 256
      my_window = window.hamming(fftlen) #.blackmanharris(fftlen)
      rxs_sampler = vector_sampler(gr.sizeof_gr_complex,fftlen)
      rxs_sampler_vect = concatenate([[1],[0]*49])
      rxs_trigger = blocks.vector_source_b(rxs_sampler_vect.tolist(),True)
      rxs_window = blocks.multiply_const_vcc(my_window)
      rxs_spectrum = gr.fft_vcc(fftlen,True,[],True)
      rxs_mag = gr.complex_to_mag(fftlen)
      rxs_avg = filter.single_pole_iir_filter_ff(0.01,fftlen)
      #rxs_logdb = blocks.nlog10_ff(20.0,fftlen,-20*log10(fftlen))
      rxs_logdb = gr.kludge_copy( gr.sizeof_float * fftlen )
      rxs_decimate_rate = gr.keep_one_in_n(gr.sizeof_float*fftlen,1)
      self.connect(rxs_trigger,(rxs_sampler,1))
      self.connect(self.input,rxs_sampler,rxs_window,
                   rxs_spectrum,rxs_mag,rxs_avg,rxs_logdb, rxs_decimate_rate)
      log_to_file( self, rxs_decimate_rate, "data/psd_input.float" )


    #output branches
    self.publish_rx_performance_measure()
Exemple #4
0
import numpy
import ofdm as ofdm

from ofdm import corba_multiplex_src_ss, corba_bitcount_src_si
from ofdm import corba_id_src, corba_map_src_sv, corba_power_src_sv
from ofdm import repetition_encoder_sb, corba_bitmap_src
from ofdm import corba_power_allocator, stream_controlled_mux_b

from random import seed, randint

#from grc_wrapper.space_time_coder_grc import space_time_coder

from ofdm import stc_encoder

std_event_channel = "GNUradio_EventChannel"  #TODO: flexible
fo = ofdm.fsm(1, 2, [91, 121])
#print "\t\t\t\tfo=",fo


class transmit_path(gr.hier_block2):
    """
  output:
  - ofdm blocks, time domain (complex stream)
  """
    def __init__(self, options):
        gr.hier_block2.__init__(self, "transmit_path",
                                gr.io_signature(0, 0, 0),
                                gr.io_signature(2, 2, gr.sizeof_gr_complex))

        common_options.defaults(options)
Exemple #5
0
    def __init__(self):
        gr.top_block.__init__(self, "Top Block")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Top Block")
        try:
             self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
             pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "top_block")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())


        ##################################################
        # Variables
        ##################################################
        self.used_id_bits = used_id_bits = 8
        self.subcarriers = subcarriers = 208
        self.id_blocks = id_blocks = 1
        self.fft_length = fft_length = 256
        self.fbmc = fbmc = 1
        self.estimation_preamble = estimation_preamble = 0
        self.data_blocks = data_blocks = 10
        self.training_data = training_data = default_block_header(subcarriers,fft_length,fbmc,estimation_preamble,[])
        self.repeated_id_bits = repeated_id_bits = subcarriers/used_id_bits
        self.data_part = data_part = data_blocks + id_blocks
        self.whitener_seed = whitener_seed = seed(1)
        self.whitener_pn = whitener_pn = [randint(0,1) for i in range(used_id_bits*repeated_id_bits)]
        self.variable_function_probe_2 = variable_function_probe_2 = 0
        self.variable_function_probe_1 = variable_function_probe_1 = 0
        self.variable_function_probe_0 = variable_function_probe_0 = 0
        self.tx_hostname = tx_hostname = "localhost"
        self.samp_rate = samp_rate = 4*250000
        self.interleaver = interleaver = trellis.interleaver(2000,666)
        self.frame_length = frame_length = 2*data_part + training_data.fbmc_no_preambles
        self.filter_length = filter_length = 4
        self.disable_freq_sync = disable_freq_sync = 1
        self.coding = coding = 1
        self.chunkdivisor = chunkdivisor = int(numpy.ceil(data_blocks/5.0))
        self.ber_window = ber_window = 100000
        self.amplitude = amplitude = 1
        self.SNR = SNR = 40

        ##################################################
        # Blocks
        ##################################################
        self._amplitude_layout = Qt.QVBoxLayout()
        self._amplitude_tool_bar = Qt.QToolBar(self)
        self._amplitude_layout.addWidget(self._amplitude_tool_bar)
        self._amplitude_tool_bar.addWidget(Qt.QLabel("amplitude"+": "))
        class qwt_counter_pyslot(Qwt.QwtCounter):
            def __init__(self, parent=None):
                Qwt.QwtCounter.__init__(self, parent)
            @pyqtSlot('double')
            def setValue(self, value):
                super(Qwt.QwtCounter, self).setValue(value)
        self._amplitude_counter = qwt_counter_pyslot()
        self._amplitude_counter.setRange(0, 1, 0.02)
        self._amplitude_counter.setNumButtons(2)
        self._amplitude_counter.setValue(self.amplitude)
        self._amplitude_tool_bar.addWidget(self._amplitude_counter)
        self._amplitude_counter.valueChanged.connect(self.set_amplitude)
        self._amplitude_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal, Qwt.QwtSlider.BottomScale, Qwt.QwtSlider.BgSlot)
        self._amplitude_slider.setRange(0, 1, 0.02)
        self._amplitude_slider.setValue(self.amplitude)
        self._amplitude_slider.setMinimumWidth(200)
        self._amplitude_slider.valueChanged.connect(self.set_amplitude)
        self._amplitude_layout.addWidget(self._amplitude_slider)
        self.top_layout.addLayout(self._amplitude_layout)
        self.tx_rpc_manager_0 = tx_rpc_manager(fft_length, subcarriers, data_blocks, frame_length, 0, 0.0, samp_rate)
        self.tigr_transmit_control_0 = tigr_transmit_control(
            subcarriers=subcarriers,
            fft_length=fft_length,
            used_id_bits=used_id_bits,
            estimation_preamble=estimation_preamble,
            filter_length=filter_length,
            fbmc=fbmc,
            data_blocks=data_blocks,
            data_part=data_part,
            repeated_id_bits=repeated_id_bits,
            coding=coding,
        )
        self.tigr_scatterplot_0 = tigr_scatterplot(
            subcarriers=subcarriers,
            fbmc=fbmc,
            fft_length=fft_length,
            estimation_preamble=estimation_preamble,
            data_blocks=data_blocks,
            data_part=11,
            frame_length=frame_length,
        )
        self.rx_rpc_manager_0 = rx_rpc_manager()
        self.rms = fbmc_rms_amplifier(amplitude, subcarriers)
        self.zeromq_pub_sink_1 = zeromq.pub_sink(gr.sizeof_float, subcarriers, "tcp://*:5559", 100)
        self.zeromq_pub_sink_0 = zeromq.pub_sink(gr.sizeof_float, 1, "tcp://*:5557", 100)
        def _variable_function_probe_2_probe():
            while True:
                val = self.rx_rpc_manager_0.add_set_scatter_subcarrier_interface(self.tigr_scatterplot_0.ofdm_vector_element_0.set_element)
                try:
                    self.set_variable_function_probe_2(val)
                except AttributeError:
                    pass
                time.sleep(1.0 / (0.000000001))
        _variable_function_probe_2_thread = threading.Thread(target=_variable_function_probe_2_probe)
        _variable_function_probe_2_thread.daemon = True
        _variable_function_probe_2_thread.start()
        def _variable_function_probe_1_probe():
            while True:
                val = self.tx_rpc_manager_0.add_tx_modulation_interface(self.tigr_transmit_control_0.ofdm_allocation_src_0.set_allocation)
                try:
                    self.set_variable_function_probe_1(val)
                except AttributeError:
                    pass
                time.sleep(1.0 / (0.000000001))
        _variable_function_probe_1_thread = threading.Thread(target=_variable_function_probe_1_probe)
        _variable_function_probe_1_thread.daemon = True
        _variable_function_probe_1_thread.start()
        def _variable_function_probe_0_probe():
            while True:
                val = self.tx_rpc_manager_0.add_tx_ampl_interface(self.rms.set_rms_amplitude)
                try:
                    self.set_variable_function_probe_0(val)
                except AttributeError:
                    pass
                time.sleep(1.0 / (0.000000001))
        _variable_function_probe_0_thread = threading.Thread(target=_variable_function_probe_0_probe)
        _variable_function_probe_0_thread.daemon = True
        _variable_function_probe_0_thread.start()
        self.trellis_permutation_0 = trellis.permutation(interleaver.K(), (interleaver.DEINTER()), 1, gr.sizeof_float*1)
        self.tigr_fbmc_snr_estimator_0 = tigr_fbmc_snr_estimator(
            subcarriers=subcarriers,
            fbmc=fbmc,
            fft_length=fft_length,
            estimation_preamble=estimation_preamble,
            frame_length=frame_length,
        )
        self.tigr_fbmc_inner_receiver_0 = tigr_fbmc_inner_receiver(
            subcarriers=subcarriers,
            fft_length=fft_length,
            data_blocks=data_blocks,
            estimation_preamble=estimation_preamble,
            filter_length=filter_length,
            frame_length=frame_length,
            disable_freq_sync=disable_freq_sync,
        )
        self.tigr_ber_measurement_0 = tigr_ber_measurement(
            subcarriers=subcarriers,
            fbmc=fbmc,
            fft_length=fft_length,
            estimation_preamble=estimation_preamble,
            ber_window=ber_window,
            data_blocks=data_blocks,
        )
        self.single_pole_iir_filter_xx_0 = filter.single_pole_iir_filter_ff(0.1, subcarriers)
        self.ofdm_viterbi_combined_fb_0 = ofdm.viterbi_combined_fb(ofdm.fsm(ofdm.fsm(1,2,[91,121])), subcarriers, -1, -1, 2, chunkdivisor, ([-1,-1,-1,1,1,-1,1,1]), ofdm.TRELLIS_EUCLIDEAN)
        self.ofdm_vector_sampler_0 = ofdm.vector_sampler(gr.sizeof_gr_complex*subcarriers, 1)
        self.ofdm_vector_padding_0 = ofdm.vector_padding(subcarriers, fft_length,  -1)
        self.ofdm_multiply_frame_fc_0 = ofdm.multiply_frame_fc(data_part, subcarriers)
        self.ofdm_multiply_const_ii_0 = ofdm.multiply_const_ii(1./int(numpy.ceil(data_blocks/5.0)))
        self.ofdm_generic_softdemapper_vcf_0 = ofdm.generic_softdemapper_vcf(subcarriers, data_part, 1)
        self.ofdm_fbmc_separate_vcvc_1 = ofdm.fbmc_separate_vcvc(fft_length, 2)
        self.ofdm_fbmc_polyphase_network_vcvc_1 = ofdm.fbmc_polyphase_network_vcvc(fft_length, filter_length, filter_length*fft_length-1, False)
        self.ofdm_fbmc_polyphase_network_vcvc_0 = ofdm.fbmc_polyphase_network_vcvc(fft_length, filter_length, filter_length*fft_length-1, False)
        self.ofdm_fbmc_pilot_block_inserter_0 = fbmc_pilot_block_inserter(subcarriers, data_part, training_data, 5)
        self.ofdm_fbmc_pilot_block_filter_0 = fbmc_pilot_block_filter(subcarriers, frame_length, data_part, training_data)
        self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0 = ofdm.fbmc_overlapping_parallel_to_serial_vcc(fft_length)
        self.ofdm_fbmc_oqam_preprocessing_vcvc_0 = ofdm.fbmc_oqam_preprocessing_vcvc(subcarriers, 0, 0)
        self.ofdm_fbmc_frame_sampler_0 = fbmc_frame_sampler(subcarriers, frame_length, data_part, training_data)
        self.ofdm_fbmc_beta_multiplier_vcvc_0 = ofdm.fbmc_beta_multiplier_vcvc(fft_length, filter_length, fft_length*fft_length-1, 0)
        self.ofdm_dynamic_trigger_ib_0 = ofdm.dynamic_trigger_ib(0)
        self.ofdm_depuncture_ff_0 = ofdm.depuncture_ff(subcarriers, 0)
        self.ofdm_coded_bpsk_soft_decoder_0 = ofdm.coded_bpsk_soft_decoder(subcarriers, used_id_bits, (whitener_pn))
        self.ofdm_allocation_buffer_0 = ofdm.allocation_buffer(subcarriers, data_blocks, "tcp://"+tx_hostname+":3333", 1)
        self.fft_vxx_1 = fft.fft_vcc(fft_length, False, ([]), True, 1)
        self.channels_channel_model_0 = channels.channel_model(
        	noise_voltage=math.sqrt(1.0*fft_length/subcarriers)*math.sqrt(0.5)*10**(-SNR/20.0),
        	frequency_offset=0.0/fft_length,
        	epsilon=1,
        	taps=((1.0 ), ),
        	noise_seed=0,
        	block_tags=False
        )
        self.blocks_vector_source_x_0 = blocks.vector_source_b([1] + [0]*(data_blocks/2-1), True, 1, [])
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
        self.blocks_keep_one_in_n_1 = blocks.keep_one_in_n(gr.sizeof_float*subcarriers, 20)
        self.blks2_selector_0 = grc_blks2.selector(
        	item_size=gr.sizeof_float*1,
        	num_inputs=2,
        	num_outputs=1,
        	input_index=0,
        	output_index=0,
        )

        ##################################################
        # Connections
        ##################################################
        self.connect((self.ofdm_fbmc_polyphase_network_vcvc_0, 0), (self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0, 0))
        self.connect((self.ofdm_fbmc_polyphase_network_vcvc_1, 0), (self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0, 1))
        self.connect((self.ofdm_fbmc_separate_vcvc_1, 1), (self.ofdm_fbmc_polyphase_network_vcvc_1, 0))
        self.connect((self.ofdm_fbmc_oqam_preprocessing_vcvc_0, 0), (self.ofdm_fbmc_pilot_block_inserter_0, 0))
        self.connect((self.ofdm_fbmc_pilot_block_inserter_0, 0), (self.ofdm_vector_padding_0, 0))
        self.connect((self.ofdm_fbmc_beta_multiplier_vcvc_0, 0), (self.fft_vxx_1, 0))
        self.connect((self.fft_vxx_1, 0), (self.ofdm_fbmc_separate_vcvc_1, 0))
        self.connect((self.tigr_transmit_control_0, 0), (self.ofdm_fbmc_oqam_preprocessing_vcvc_0, 0))
        self.connect((self.single_pole_iir_filter_xx_0, 0), (self.blocks_keep_one_in_n_1, 0))
        self.connect((self.ofdm_fbmc_frame_sampler_0, 1), (self.ofdm_fbmc_pilot_block_filter_0, 1))
        self.connect((self.ofdm_fbmc_frame_sampler_0, 0), (self.ofdm_fbmc_pilot_block_filter_0, 0))
        self.connect((self.ofdm_fbmc_pilot_block_filter_0, 1), (self.ofdm_vector_sampler_0, 1))
        self.connect((self.ofdm_vector_sampler_0, 0), (self.ofdm_coded_bpsk_soft_decoder_0, 0))
        self.connect((self.ofdm_coded_bpsk_soft_decoder_0, 0), (self.ofdm_allocation_buffer_0, 0))
        self.connect((self.ofdm_allocation_buffer_0, 1), (self.ofdm_generic_softdemapper_vcf_0, 1))
        self.connect((self.single_pole_iir_filter_xx_0, 0), (self.ofdm_generic_softdemapper_vcf_0, 2))
        self.connect((self.ofdm_generic_softdemapper_vcf_0, 0), (self.trellis_permutation_0, 0))
        self.connect((self.ofdm_depuncture_ff_0, 0), (self.ofdm_viterbi_combined_fb_0, 0))
        self.connect((self.ofdm_allocation_buffer_0, 1), (self.ofdm_depuncture_ff_0, 1))
        self.connect((self.blocks_vector_source_x_0, 0), (self.ofdm_depuncture_ff_0, 2))
        self.connect((self.ofdm_allocation_buffer_0, 0), (self.ofdm_multiply_const_ii_0, 0))
        self.connect((self.ofdm_multiply_const_ii_0, 0), (self.ofdm_viterbi_combined_fb_0, 1))
        self.connect((self.ofdm_fbmc_separate_vcvc_1, 0), (self.ofdm_fbmc_polyphase_network_vcvc_0, 0))
        self.connect((self.ofdm_viterbi_combined_fb_0, 0), (self.tigr_ber_measurement_0, 2))
        self.connect((self.ofdm_dynamic_trigger_ib_0, 0), (self.tigr_ber_measurement_0, 3))
        self.connect((self.ofdm_fbmc_frame_sampler_0, 0), (self.tigr_fbmc_snr_estimator_0, 0))
        self.connect((self.ofdm_fbmc_frame_sampler_0, 1), (self.tigr_fbmc_snr_estimator_0, 1))
        self.connect((self.tigr_fbmc_inner_receiver_0, 1), (self.ofdm_fbmc_frame_sampler_0, 1))
        self.connect((self.tigr_fbmc_inner_receiver_0, 2), (self.ofdm_fbmc_frame_sampler_0, 0))
        self.connect((self.rms, 0), (self.blocks_throttle_0, 0))
        self.connect((self.tigr_fbmc_inner_receiver_0, 3), (self.zeromq_pub_sink_0, 0))
        self.connect((self.blocks_keep_one_in_n_1, 0), (self.zeromq_pub_sink_1, 0))
        self.connect((self.ofdm_vector_padding_0, 0), (self.ofdm_fbmc_beta_multiplier_vcvc_0, 0))
        self.connect((self.tigr_fbmc_inner_receiver_0, 0), (self.single_pole_iir_filter_xx_0, 0))
        self.connect((self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0, 0), (self.rms, 0))
        self.connect((self.ofdm_allocation_buffer_0, 0), (self.ofdm_dynamic_trigger_ib_0, 0))
        self.connect((self.ofdm_coded_bpsk_soft_decoder_0, 0), (self.tigr_ber_measurement_0, 0))
        self.connect((self.ofdm_allocation_buffer_0, 0), (self.tigr_ber_measurement_0, 1))
        self.connect((self.blks2_selector_0, 0), (self.ofdm_depuncture_ff_0, 0))
        self.connect((self.trellis_permutation_0, 0), (self.blks2_selector_0, 1))
        self.connect((self.ofdm_generic_softdemapper_vcf_0, 0), (self.blks2_selector_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.channels_channel_model_0, 0))
        self.connect((self.channels_channel_model_0, 0), (self.tigr_fbmc_inner_receiver_0, 0))
        self.connect((self.ofdm_fbmc_pilot_block_filter_0, 0), (self.ofdm_vector_sampler_0, 0))
        self.connect((self.ofdm_allocation_buffer_0, 2), (self.ofdm_multiply_frame_fc_0, 1))
        self.connect((self.ofdm_fbmc_pilot_block_filter_0, 0), (self.ofdm_multiply_frame_fc_0, 0))
        self.connect((self.ofdm_multiply_frame_fc_0, 0), (self.tigr_scatterplot_0, 0))
        self.connect((self.ofdm_multiply_frame_fc_0, 0), (self.ofdm_generic_softdemapper_vcf_0, 0))
import numpy
import ofdm as ofdm

from ofdm import corba_multiplex_src_ss,corba_bitcount_src_si
from ofdm import corba_id_src,corba_map_src_sv,corba_power_src_sv
from ofdm import repetition_encoder_sb, corba_bitmap_src
from ofdm import corba_power_allocator, stream_controlled_mux_b

from random import seed,randint

#from grc_wrapper.space_time_coder_grc import space_time_coder

from ofdm import stc_encoder

std_event_channel = "GNUradio_EventChannel" #TODO: flexible
fo=ofdm.fsm(1,2,[91,121])
#print "\t\t\t\tfo=",fo

class transmit_path(gr.hier_block2):
  """
  output:
  - ofdm blocks, time domain (complex stream)
  """
  def __init__(self, options):
    gr.hier_block2.__init__(self, "transmit_path",
        gr.io_signature(0,0,0),
        gr.io_signature(2,2,gr.sizeof_gr_complex))

    common_options.defaults(options)

    config = self.config = station_configuration()