Description

This report describes how one can use the GC2011 Digital Filter chip to build digital modulators for most BPSK QPSK and QAM radio signals. The modulator described here will accept a data stream with a symbol rate equal to B (standing for baud) and will output a modulated QAM signal centered at an IF frequency equal to the symbol rate or twice the symbol rate (B or 2B). A typical application woul