Performance analysis of wideband smart antennas system using different frequency compensation techniques

Adaptive antenna array systems have been shown to played a central role in removing narrowband multiple-access interference (MAI) in wireless communications. However, due to the actual need for increasing channel capacity, the required bandwidth is becoming wider and can bring significant deteriorations of the narrowband adaptive systems. These performance degradations are mainly caused by the fact that the inter-element phase shift becomes a function of the frequency while the adaptation weights are kept independent of frequency. This paper specifically deals with the effects of wideband CDMA signals on the narrowband adaptive system. The performance evaluation for different chip rates is carried out in term of adaptive array pattem. The aim of this paper is to investigate performance analysis of various smart antenna to study the effect of wideband signals on smart antenna.