I took a look at the constellation receiver, I couldn't get it to down sample. For example samples per symbol of 4 was giving me 4x output I expected. I didn't really find that block referenced anywhere else. Maybe its not really used? Maybe I didn't understand the documentation maybe it just recovers the carrier and doesn't down sample or decode the symbol. Anyhow, I think maybe the blocks used in tutorial 7 might be a better choice (like polyphase clock sync etc).
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From: James Shimer
Sent: Thursday, April 13, 2017 8:16 PM
To: Harsha Chenji; address@hidden
Subject: Re: [Discuss-gnuradio] simple example with Constellation Receiver, not working
Sent: Thursday, April 13, 2017 8:16 PM
To: Harsha Chenji; address@hidden
Subject: Re: [Discuss-gnuradio] simple example with Constellation Receiver, not working
Did you try with out differential encoding? I didn't see anything in the Constellation Receiver saying it handles decoding...
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From: Discuss-gnuradio <discuss-gnuradio-bounces+address@hidden> on behalf of Harsha Chenji <address@hidden>
Sent: Thursday, April 13, 2017 7:56 PM
To: address@hidden
Subject: [Discuss-gnuradio] simple example with Constellation Receiver, not working
Sent: Thursday, April 13, 2017 7:56 PM
To: address@hidden
Subject: [Discuss-gnuradio] simple example with Constellation Receiver, not working
I am trying to replace the QAM mod/demod blocks with constellation mod/recvr blocks in my flowgraph.
With QAM mod/demod, the first few and last few bytes of the output file are junk.
With const. mod/recvr, 100% of the output file is junk. What could I be doing wrong??
screenshot: