Re: [Discuss-gnuradio] benchmark OFDM Question

[waqasme]

Hi Everyone/Smith,
I am doin my M.Sc. project on OFDM Implementation in GNU RADIO (SDR) via
USRP.
I am quite new to GNU Radio i dont know much about its functions. I am
looking for benchmark_ofdm.py file that i can use to implement the design n
GNU radio and later on transmit and recieve via USRP. 
I will be very greatful to you if anyone of you send me the file or tell me
where i can get all this info and how to implement (procedure).
Thanks in advance...
Waqas.
14/08/2011

address@hidden  


smith mark wrote:
> 
> Hi everyone,
> I am working on OFDM in gnuradio. I ran the benchmark_ofdm.py file.
> Everything worked well, I want to ask one thing that I didn't see the last
> packet on the terminal.
> I set the packet size to 400 bytes and total number of bytes to be
> transmitted to 1600. I should see 4 packets but i see only 3 packets.
> Where
> is the problem??
> Portion of the code is given blelow:
> --------------------------------------------------------------------------------
> nbytes = int(1600 * 1) //line that I changed
> n = 0
> pktno = 0
> pkt_size = int(400)  //line that I changed
> 
> while n < nbytes:
> pkt_contents = struct.pack('!H', pktno) + (pkt_size - 2) * chr(pktno &
> 0xff)
> send_pkt(pkt_contents)
> n += pkt_size
>  pktno += 1
> ---------------------------------------------------------------------------------
> 
> 
> Output is shown below:
> 
>>>> gr_fir_ccf: using SSE
>>>> gr_fir_ccc: using SSE
>>>> gr_fir_fff: using SSE
> ok: True  pktno: 0  n_rcvd: 1  n_right: 1
> 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
> 
> 
> ok: True  pktno: 1  n_rcvd: 2  n_right: 2
> 0101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101
> 
> 
> ok: True  pktno: 2  n_rcvd: 3  n_right: 3
> 0202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202
> 
> Why fourth packet is not sent ? Or if it is sent then why it is not
> displayed in the output. I am using gnuradio 3.3.0. Please help me in
> this.
> 
> 
> Regards
> Smith
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> 



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