Forum: GNU Radio Is it possible to fit modulation/demodulation, error handling and MAC protocol stuff on FPGA?

Announcement (2017-05-07): www.ruby-forum.com is now read-only since I unfortunately do not have the time to support and maintain the forum any more. Please see rubyonrails.org/community and ruby-lang.org/en/community for other Rails- und Ruby-related community platforms.
Andriy B. (Guest)
on 2009-03-03 14:10
(Received via mailing list)
Hi all
I'm doing the project on USRP, a digital data transmission system. I use
RFX2400
daughterboard. I want to implement something like 802.11b/g system, but
I would like to put all the modulation/demodulation work, error
detection/correction and MAC protocol on FPGA, in order to make the
system independent from PC. I will feed a data stream to the USRP and
want to use the fastest rate possible, and I want the receiver to send
only some sort of acknowledgement for the received packets (cumulative
acks may be considered). The first question is, is it possible to fit
such a program on USRP's Cyclone? As I understand, existing code takes
almost all the space on FPGA, but it's possible to remove unused parts
(for ex., I don't need all the channels) and free some space. Another
question is which modulation technique will take least space while
doing the job (i need at least 25 meters range)? And I also wonder if
the multipath propagation will be a big problem?  If yes, is there an
easy way to deal with it?
Any help will be appreciated! Thanx in advance for your answer

Andrey Brandis
This topic is locked and can not be replied to.