[Discuss-gnuradio] UDP sink : Connection Refused?

2009-04-11 Thread Sajjad Sarwar
"gr_block_executor: source returned 0 from work. We're marking it DONE." what does it mean? -- Sajjad Sarwar ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Collision Detection

2009-04-07 Thread Sajjad Sarwar
? -- Sajjad Sarwar ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Carrier Phase Recovery

2009-04-04 Thread Sajjad Sarwar
I am doing my UG project on "optimized packet radio" in SDR. Presently, I am using costas loop block but i think it's recovering only the frequency of local oscillator but not the phase. Please correct me if i am wrong. Now the problem is i dont want to use dqpsk because it would cause a 3dB loss o

[Discuss-gnuradio] Antennas with BasicRx and Tx Daughterboards

2009-03-25 Thread Sajjad Sarwar
Hi, Is it possible to use antennas directly with Basix Rx and Tx daughterboards without using any RF front-end?? Regards, Sajjad ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Gardner's Algo Block for Symbol Timing

2009-03-24 Thread Sajjad Sarwar
Hi, I am doing my final year UG project of implementing a packet radio in SDR. I want to use Garner's algo for symbol timing recovery but i couldn't find any block of it in gnuradio. Is there any such block? if not, then what's the solution? cz I am not good at writing own signal processing block a

[Discuss-gnuradio] How to use gr.message_sink and gr.message_source

2009-03-23 Thread Sajjad Sarwar
Hi, I am new to gnuradio and trying to understand how gr.message_sink and gr.message_source work. I want to convert a byte stream (read from a file) into a message of 50 bytes and store it in a queue. Then i want to retrieve that message, convert it back to byte stream and write it to another file