def setUp (self):
self.tb = gr.top_block ()
key = "subframe"
msg_buf_name = "cfi"
print "setup test"
data = []
for i in range(3):
cfi = get_cfi_sequence(i+1)
data.extend(nrz_encoding(cfi))
reps = 5
taglist = get_tag_list(3*reps, key, 10)
data = [float(data[i]) for i in range(len(data))]
ext_data = []
for i in range(reps):
ext_data.extend(data)
data = ext_data
self.src = blocks.vector_source_f(data, False, 32, taglist)
self.cfi = lte.cfi_unpack_vf(key, msg_buf_name)
self.dbg = blocks.message_debug()
self.tb.connect(self.src, self.cfi)
#self.tb.msg_connect(self.cfi, msg_buf_name, self.dbg, "print")
print "setup finished"
def __init__(self, N_rb_dl, key, out_key, msg_cell_id_name, msg_N_ant_name, msg_cfi_name):
gr.hier_block2.__init__(self,
"decode_pcfich_vcm",
gr.io_signature(3, 3, gr.sizeof_gr_complex * 12 * N_rb_dl), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
# register message ports
self.message_port_register_hier_out(msg_cell_id_name)
self.message_port_register_hier_out(msg_N_ant_name)
self.message_port_register_hier_in(msg_cfi_name)
# define some variables
cvlen = 16
N_ant = 2 # dummy resetable during runtime
style = "tx_diversity" # PCFICH only uses this value (no spatial multiplexing etc.)
# instatiate blocks with there parameters
self.demux = lte.pcfich_demux_vcvc(N_rb_dl, key, out_key, msg_cell_id_name)
self.predecoder = lte.pre_decoder_vcvc(N_ant, cvlen, style)
self.demapper = lte.layer_demapper_vcvc(N_ant, cvlen, style)
self.qpsk = lte.qpsk_soft_demod_vcvf(cvlen)
self.descrambler = lte.pcfich_descrambler_vfvf(out_key, msg_cell_id_name)
self.unpack = lte.cfi_unpack_vf(out_key, msg_cfi_name)
# Connect defined blocks
self.connect((self, 0), (self.demux, 0), (self.predecoder, 0))
self.connect((self, 1), (self.demux, 1), (self.predecoder, 1))
self.connect((self, 2), (self.demux, 2), (self.predecoder, 2))
self.connect(self.predecoder, self.demapper, self.qpsk, self.descrambler, self.unpack)
# Don't forget the message ports
self.msg_connect(self, msg_N_ant_name, self.predecoder, msg_N_ant_name)
self.msg_connect(self, msg_N_ant_name, self.demapper, msg_N_ant_name)
self.msg_connect(self, msg_cell_id_name, self.demux, msg_cell_id_name)
self.msg_connect(self, msg_cell_id_name, self.descrambler, msg_cell_id_name)
self.msg_connect(self.unpack, msg_cfi_name, self, msg_cfi_name)
def test_001_parts(self):
print "test 001 PARTS!!!"
# This test is for integration
# all parts expect Demux are tested if they decode CFI correctly
self.tb2 = gr.top_block ()
cell_id = 124
N_ant = 2
style = "tx_diversity"
cvlen = 16
key = "subframe"
msg_buf_name = "cfi"
cfi = 1
data = []
exp_pc = []
for ns in range(10):
cfi_seq = get_cfi_sequence(cfi)
scr = scramble_cfi_sequence(cfi_seq, cell_id, 2*ns)
mod = qpsk_modulation(scr)
lay = layer_mapping(mod, N_ant, style)
prc = pre_coding(lay, N_ant, style)
prc_prep = [prc[0][i]+prc[1][i] for i in range(len(prc[0]))]
#print np.shape(prc)
prep = prepare_for_demapper_block(lay, N_ant, style)
exp_pc.extend(prep)
data.extend(prc_prep)
taglist = get_tag_list(len(data)/16, key, 10)
self.src = blocks.vector_source_c(data, False, cvlen, taglist)
h0 = [complex(1,0)]*len(data)
h1 = [complex(1,0)]*len(data)
self.src1 = blocks.vector_source_c(h0, False, cvlen)
self.src2 = blocks.vector_source_c(h1, False, cvlen)
self.predecoder = lte.pre_decoder_vcvc(N_ant, cvlen, style)
self.snk = blocks.vector_sink_c(cvlen)
self.demapper = lte.layer_demapper_vcvc(N_ant, cvlen, style)
self.qpsk = lte.qpsk_soft_demod_vcvf(cvlen)
self.descr = lte.pcfich_descrambler_vfvf(key, msg_buf_name)
self.descr.set_cell_id(cell_id)
self.cfi = lte.cfi_unpack_vf(key, msg_buf_name)
self.tb2.connect(self.src, (self.predecoder, 0))
self.tb2.connect(self.src1, (self.predecoder, 1))
self.tb2.connect(self.src2, (self.predecoder, 2))
self.tb2.connect(self.predecoder, self.demapper)
self.tb2.connect(self.predecoder, self.snk)
self.tb2.connect(self.demapper, self.qpsk, self.descr, self.cfi)
self.tb2.run()
print "test 001 PARTS FINISHED!!!\n"