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Re: [Discuss-gnuradio] BPSK to QPSK

From: Tom Rondeau
Subject: Re: [Discuss-gnuradio] BPSK to QPSK
Date: Wed, 03 Mar 2010 08:40:50 -0500
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv: Gecko/20100111 Thunderbird/3.0.1

On 3/3/2010 7:12 AM, Mattias Kjellsson wrote:
amarnath alapati wrote:
hi everyone,

        I am using the programs of DIGITAL-BERT folder to see the bit
error rate pattern versus the SNR. The given programs are for BPSK
scheme. I tried to change it for QPSK Scheme. But seems that I did not
do it right. I am giving the modified code in the programs . Please
help me out......Thanking in advance....
I think that the Costas- and MM- blocks only work for differential
encoding... If anyone knows differently, speak now of forever hold your
peace ;p


No, the synchronization schemes are not dependent on the type of encoding. They will work for either differential or non-differential. In fact, they are really overkill for differentially encoded modulations....


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