05-16-2012 04:34 AM
I am trying to design QPSK modulator demodulator. Modulator is working fine but in demodulator filter design is creating problems.
Below Image shows the signal before low pass filter and after low pass filter which is an error.
I am also attaching the entire model.
I am using Matlab R2011a and Xilinx version 13..please help me..
05-16-2012 11:09 AM
Do you have access to the simulink Communication Systems Toolbox?
They have nice models for QPSK modulation and demod. If you can understand the processing and get them to work in simulink, implementing in SysGen should not be a problem.