Performances of All Digital Differential PSK Direct Sequence Spread Spectrum Receiver

The performances of a direct sequence spread spectrum receiver has been carried out by considering a differential coherent phase shift keying detection of the data. After the baseband down conversion of the received signal an hard limiter is included in both the in-phase and quadrature paths. So that we can built a fully digital receiver. The penalty we pay in the presence of noise jamming is of 5 dB with respect to analog receiver for a quadriphase transmission. Moreover, increasing the signal to jamming ratio a saturation of the error rate appear.