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From: | zhengxiangwei |
Subject: | Re: [Discuss-gnuradio] how to deal with "underride" |
Date: | Wed, 12 Dec 2012 23:20:07 +0000 |
I think frequency offset may not be the reason. The attachment is the oscilloscope picture. The first one use DBPSK modulation, which can be received by simple_trx.py. The second one use GMSK modulation, which can be successfully received by simple_trx.py. I wonder is there any reason may cause simple_trx.py fail to work using DBPSK. Thank you. ================================= Xiangwei Zheng Research Assistant ECE Department, Virginia Tech Office: Durham Hall 365 Tel: 540-553-6235 From: address@hidden Date: Wed, 12 Dec 2012 12:07:31 -0500 Subject: Re: [Discuss-gnuradio] how to deal with "underride" To: address@hidden CC: address@hidden On Wed, Dec 12, 2012 at 11:49 AM, zhengxiangwei <address@hidden> wrote:
No, this is not the reason. This is probably a channel filter used in PSK signals and not in the GMSK signals. Most likely the reason is frequency offset or too much or too little power. Tom |
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