コード例 #1
0
  def __init__(self, vlen, frame_length ):

    gr.hier_block2.__init__( self,
        "channel_estimator_002",
        gr.io_signature( 1, 1, gr.sizeof_gr_complex * vlen ),
        gr.io_signature( 1, 1, gr.sizeof_gr_complex * vlen ) )

    # disable phase tracking
    nondata_blocks = range(frame_length)
    pilot_tones = []

    if channel_estimator_002.vlen != vlen or \
       channel_estimator_002.td is None or \
       channel_estimator_002.fd is None :
      td,fd = schmidl_ifo_designer.create(vlen, vlen)
      channel_estimator_002.td, channel_estimator_002.fd = td,fd
      channel_estimator_002.vlen = vlen
    else:
      td,fd = channel_estimator_002.td, channel_estimator_002.fd

    self.preamble_td = td
    self.preamble_fd = fd

    uut = ofdm.channel_estimator_02(vlen, pilot_tones, nondata_blocks)
    uut.set_known_block( 0, fd, True )

    trigger = [0]*frame_length
    trigger[0] = 1
    trigger = gr.vector_source_b( trigger, True )
    self.trigger = trigger

    self.connect( self, uut, self )
    self.connect( trigger, ( uut, 1 ) )

    terminate_stream( self, ( uut, 1 ) )
コード例 #2
0
  def __init__( self, vlen ):

    gr.hier_block2.__init__( self,
        "channel_estimator_001",
        gr.io_signature( 1, 1, gr.sizeof_gr_complex * vlen ),
        gr.io_signature( 1, 1, gr.sizeof_gr_complex * vlen ) )

    nondata_blocks = [1]
    pilot_tones = [0]
    if channel_estimator_001.vlen != vlen or \
       channel_estimator_001.td is None or \
       channel_estimator_001.fd is None :
      td,fd = schmidl_ifo_designer.create(vlen, vlen)
      channel_estimator_001.td, channel_estimator_001.fd = td,fd
      channel_estimator_001.vlen = vlen
    else:
      td,fd = channel_estimator_001.td, channel_estimator_001.fd

    self.preamble_td = td
    self.preamble_fd = fd

    uut = ofdm.channel_estimator_02(vlen, pilot_tones, nondata_blocks)
    uut.set_known_block( 0, self.preamble_fd, True )

    trigger = gr.vector_source_b( [1], True )

    self.connect( self, uut )
    self.connect( trigger, ( uut, 1 ) )
    self.connect( ( uut, 2 ), self )

    terminate_stream( self, ( uut, 0 ) )
    terminate_stream( self, ( uut, 1 ) )