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From: | Richard Bell |
Subject: | Re: [Discuss-gnuradio] QPSK Receiver and Processing Power |
Date: | Thu, 19 Feb 2015 08:18:11 -0800 |
Hello Rich,
although Ed commented on the latency issue, regarding your performance issue my 2 pence: From my experience, using a time domain equalizer with 100 taps is a huge computational burden. Imagine: You are expecting significant echos (to be equalized) of 100*4/250kHz=1,6 ms. I do not know your application, but for wireless this is a whole lot.
BTW: I am about to use exactly your computer USRP setup.
Best regards
Stephan Ludwig
Robert Bosch GmbH
Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4)
Renningen
70465 Stuttgart
GERMANY
www.bosch.com
Tel. +49(711)811-8809
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Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Dirk Hoheisel, Christoph Kübel,
Uwe Raschke, Wolf-Henning Scheider, Dr. Werner Struth, Peter TyrollerVon: discuss-gnuradio-bounces+stephan.ludwig2=address@hidden [mailto:discuss-gnuradio-bounces+stephan.ludwig2=address@hidden] Im Auftrag von Richard Bell
Gesendet: Donnerstag, 19. Februar 2015 00:45
An: address@hidden
Betreff: [Discuss-gnuradio] QPSK Receiver and Processing Power
Hello all,
My question is, looking at my receiver flowgraph, would you think this design should push the limits of a good laptop? Would you believe I could be constrained to near the lowest sample rate limit with this design?
Laptop Specs: HP Elitebook 8570w, Core i7, 16 GB RAM, Ubuntu 14.04
I would be interested in hearing what sample rates other peoples QPSK radios run at with a USRP N210 and similar computer.
Thanks,
Rich
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