Accurate BER of MC-DS-CDMA over rayleigh fading channels

Abstract

In this contribution an accurate average bit error rate (BER) formula is derived for Rayleigh-faded MC-DS-CDMA in the context of asynchronous transmissions and random spreading sequences. Our analysis is based on the characteristic function and does not rely on any assumption concerning the statistical behavior of the interference. We develop a new closed-form expression for the conditional characteristic function of the inter-carrier interference and require only a single integration for the associated BER calculation. The accuracy of the standard Gaussian approximation (SGA) techniques is also evaluated. © 2007 Springer.