Influence of Imperfect Cophasing on Performance of MRC Receiver of QPSK Signals Transmitted over Weibull Fading Channel

Abstract

This paper presents an analysis of maximum ratio combining (MRC) receiver of quaternary phase-shift keying (QPSK) signals transmitted over a Weibull fading channel. We determine the influence of imperfect cophasing and branches unbalance on bit error rate dependence on average signal-to-noise ratio. The performance dependence on diversity order and fading severity is also observed.

Keywords

• Cophasing
• Diversity systems
• Error probability
• Fading