[Discuss-gnuradio] Square Wave Pulse Shapping Filter

Hello everyone, I was giving the task of quickly develop a receiver for an old satellite system that use a pulse shaping filter with square wave impulse response and QPSK constelation. Does GNU Radio has a prompt solution for this? By a prompt solution a mean a single block in GNU Radio Companion

[Discuss-gnuradio] Good sugestions - gr_fast_atan2() and gr_fast_nco()

I'm trying to build a costas loop to demodulate a BPSK signal from a non-geostationary satellite. I need to make it work at real time; since our computer can't store all the data during the transmission period. The base band signal has a frequency of 70 kHz. In order to make a fast costas loop,

[Discuss-gnuradio] Error mensage 0000000

Some time when running a program developed with gnuradio, a sequence of zero appear on the prompt. Does it mean that some block is overrunning, not handling all the information gived to him? What happen in this case? The data will accumulate on the memory for a latter process or it is lost? T

[Discuss-gnuradio] file_descriptor parameter?

I need of a real-time oscilosope for my application. Can I use the gr.oscope_sink_f block? What is the file_desciptor parameter required in this block? Thanks Marcelo ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/