Hi all, I have modified the file RX OFDM to test the ZMQ REP/REQ blocks.
What I did, basically, was to split the original in 5 different ‘parts’.
Instead of connection the blocks directly, I throw the output of a part to a
ZMQ REP Sink @PORT and recover it in the following part with a ZMQ REQ Source
@PORT.
The flowgraph structure is as follows (complete .grc attached):
— Random source —> stream to tagged —> OFDM Transmitter —> Channel Model —> ZMQ
REP Sink @55500
— ZMQ REQ Source @55500 —> Shmidi & Cox OFXM Sync -> .. —> Multiply —> ZMQ REP
Sink @{55510, 55511}
— 3x ZMQ REQ Source @{55510, 55511, 55530} — > Header/Payload Demux —> 2x ZMQ
REP Sink @{55520, 55521}
— ZMQ REQ Source @55520 —> FFT —> … —> Constellation Decoder —> ZMQ REP Sink
@55530
— ZMQ REQ Source @55521 —> FFT —> … —> Stream CRC 32 —> Tag Debug
The problem is: when I execute the flowgraph, after some time the following
output is printed:
gr::log :INFO: packet_headerparser_b0 - Detected an invalid packet at item 2112
gr::log :INFO: header_payload_demux0 - Parser returned #f
Any hints?
--
Maicon Kist
all_in_one2.grc
Description: Binary data
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