Implementation Methodology of Adaptive Antenna in TD-SCDMA Simulation Platform

Smart antenna technique is one of the most important techniques used in TD-SCDMA system. Setting up a methodology to implement smart antennas based on TD-SCDMA system level simulation platform is useful for analyzing the influences of smart antennas on the whole communication system. Generally speaking, smart antennas can be divided into two kinds, one is fixed multi-beam switching antenna and the other is adaptive antenna. This paper proposes a methodology to implement adaptive antenna in TD-SCDMA simulation platform by establishing the node model of Node B, raising the orientation methodology of the adaptive antenna array, and giving the detailed process of downlink beam forming implementations as well. Theoretically, statistics such as SNR (signal to noise ratio) at UE (user equipment) and throughput at Node B are larger for systems adopting adaptive antenna than isotropic antenna. Through running simulations and collecting statistics of SNR and throughput, the proposed methodology is verified to be feasible and appropriate.