Analytical BER performance of DS-CDMA ad hoc networks using large area synchronized spreading codes

Abstract

The family of operational CDMA systems is inter-More explicitly, the achievable system capacity might be ference-limited owing to the Inter Symbol Interference (ISI) and dramatically improved even with the aid of a limited-duration the Multiple Access Interference (MAI) encountered. They are IFW, where the off-peak aperiodic auto-correlations c,, and interference-limited, because the orthogonality of the spreading codes is typically destroyed by the frequency-selective fading cross-correlations cas become zero [3]. These attractive corchannel and hence complex multiuser detectors have to be used relation properties assist us in eliminating the effects of both for mitigating these impairments. By contrast, the family of Large ISI and MAI. The family of LAS [4] codes exhibits the Area Synchronous (LAS) codes exhibits an Interference Free above-mentioned favourable properties, which renders them Window (IFW), which renders them attractive for employment a promising design alternative to traditional spreading codes. in cost-efficient quasi-synchronous ad hoc networks dispensing Initial c with power control. In this contribution we investigate the inal Comparatve studies between LAS-CDMA and tradi