Performance Analysis of Smart Antenna System Using a Phase Update Method in W-CDMA Signal Environment

摘要

This paper proposes a novel blind adaptive algorithm for computing the weight vector of an antenna array system. The new technique utilizes a phase update algorithm to obtain the weight vector maximizing the SINR (Signal to Interference plus Noise Ratio) of the received signal. It is observed that the proposed algorithm generates a suboptimal weight vector with a linear computational load (O(6N+8)). From the various simulations, it is confirmed that, when the signal environment becomes adverse, the proposed algorithm outperforms the conventional one in terms of the communication capacity by about 3 times. Applying the proposed algorithm to W-CDMA mobile communication system, we have found that both communication capacity and communication quality are significantly improved.