Bit error rate (BER) performance of differential 16STAR-QAM in frequen
cy-selective Rician fading channels with diversity reception is theore
tically analysed for three different types of delay profiles: double s
pike; one-sided exponential and Gaussian profiles. The effect of time
delay between line-of-sight (LOS) and multipath components is also inc
luded in the analysis, and is shown to degrade the system performance
significantly.