Hi Tom, Thanks for your reply. yah i did use noise block and i am changing the amplitude in the noise block but it does not make any difference in the output. You said calculate the SNR value i have to check signal power and determine the noise power. i dont know how to calculate those values. iam simply changing the amplitude in the noise block and try to see if it makes any difference. And the link you have provided below is the C++ code that does not explain anywhere how to calculate or change the SNR value. Can you please explain in detail how it works. i really appriciate your help and support.
Thanks and Regards, Waqas _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- View this message in context: http://old.nabble.com/SNR%28Signal-to-Noise-Ratio%29-Value-in-DQPSK-Implementation-tp32381155p32423923.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio