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 ) )
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 ) )
