Precise bit error rate analysis of bandlimited BPSK with EGC and SC diversity in CCI and Nakagami fading

Abstract

Equal gain and maximum desired user power selection combining for bandlimited BPSK systems in Nakagami fading with cochannel interference are considered. Spectrum raised-cosine and new Beaulieu-Tan-Damen pulse shapes are employed. Average bit error rates are derived using characteristic function and Fourier series methods for arbitrary orders of diversity and fading parameters. The computational complexity of the solution does not grow with the diversity order. Slow flat fading, asynchronous timing and independent fading gains are assumed. The superiority of the Beaulieu-Tan-Damen pulse over the conventional spectrum raised-cosine pulse in bit error rate performance is observed and the superiority increases with the diversity order.