BER ANALYSIS OF GMSK WITH DIFFERENTIAL DETECTION IN A LAND MOBILE CHANNEL

The BER performance of a land mobile radio communication system with G MSK modulation is analyzed using one-bit differential detection. In pa rticular, the effect of the IF filter bandwidth on the BER is analyzed . The optimum bandwidth for the IF filter is found to be a function of signal-to-noise power ratio, signal-to-co-channel-signal power ratio, and signal-to-delayed-signal power ratio. Several graphs are presente d to illustrate the effect of the IF bandwidth in the presence of Dopp ler spread and frequency-selective fading.