Eric Blossom wrote: > > Your baseband sample rate is 100M/32 -> 3.125MS/s > > You're using 2 samples/symbol, thus your symbol rate is > 3.125MS/s / 2 -> 1.5625Msymbols/s > And since you're using DBPSK, you're getting 1 bit/symbol, thus your > raw over-the-air bit rate is 1.5625Mbit/s >
Hi Eric, a quick question about this. According to: _pick_bitrate(bitrate, bits_per_symbol, samples_per_symbol, xrate, converter_rate, xrates, gen_info) in pick_bitrate.py when the samples per symbol and interpolation are given, then our bitrate can be determined straight away. i.e Bitrate = converter_rate / xrate / samples_per_symbol Is this correct though, in determining the bitrate for both dbpsk & dqpsk? For instance if we passed the_pick_bitrate() function an interpolation of 128 and Samples/symbol of 2, then according to the code, our bit rate for both dqpsk and dbpsk will be 500kbs. But according to what your saying: 1) for dbpsk if DAC rate = 128e6 Interpolation = 128 Samples/symbol = 2 Bitrate = 128e6 / 128 / 2 = 500k 2) for dqpsk Using the same parameters Bitrate = 128e6 / 128 / 2 / 2bits per symbol = 256K Have i missed something here, or in the code? Regards, Marcin -- View this message in context: http://old.nabble.com/Simple-digital-data-transmitter-tp28538027p28543866.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
