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Re: [Discuss-gnuradio] Running tunnel.py/benchmark_tx.py (OFDM) with XCV


From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] Running tunnel.py/benchmark_tx.py (OFDM) with XCVR2450?
Date: Tue, 31 Jan 2012 09:00:34 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.15) Gecko/20101027 Fedora/3.0.10-1.fc12 Thunderbird/3.0.10

On 31/01/12 08:37 AM, Andrew Davis wrote:
>One thing that I noticed was that the --tx-amp=0.8. That's very high for OFDM with it's large PAPR.

I'm thinking that too, there really should be some kind of warning when you drive the DAC to saturation.
It's not the DAC that's typically the problem, it's the final RF amplifier on the daughter-card, and
  that's not precisely predictable from the software side.


-- 
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org

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