Hi everyone, Our project is to use the USRP as a DTV channel simulator to test the respective quality of DTV set boxes. That means to be able to attenuate the signal, add noise and simulate echos from reflexions on mountains for example.
The biggest question is how to do it. One way would be to record a signal on the PC, then filter it and fire it back to the set box. But we don't know if the speed of the hdd is fast enough for the mass of data. And other way would be to tune the FPGA firmware to implement all the function inside. That is to receive the signal, create a really long FIR with only a few non null coefficients and add a noise before sending it back. Ideally the FIR should be configurable but we can imagine to use a set of precompiled firmware to suit the testing procedure. Which approach is more sensible? I'm efficient in VHDL and verilog doesn't seams to hard to learn. Does the existing FIR could be tune for this application? Would the community be interested in this alternative use of an USRP? Regards Damien _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
