----- Forwarded Message ----
From: Bill Stevenson <[EMAIL PROTECTED]>
To: Zenny Zhang <[EMAIL PROTECTED]>
Sent: Tuesday, November 25, 2008 9:47:40 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
________________________________
From: Zenny Zhang <[EMAIL PROTECTED]>
To: Bill Stevenson <[EMAIL PROTECTED]>
Sent: Tuesday, November 25, 2008 8:15:20 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
Bill,
> with two USRP 5 feet apart and the rssi values I tested at the receiver side
I think 5 feet is a bit too close. You may actually want to separate
the two usrps by at least 30 feet if you want to check the PER witrh
regard to signal power.
Zenny
Thank you, Zenny. Actually we had changed the distance between them from 40
feet to 1 feet. But we could get nothing but the same result. I think Johnathan
is right, if there were an error in the qpsk demodulator, that must be in the
synchronization part!
Bill
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