The Performance Comparison between Hybrid and Conventional Beamforming Receivers in a Multipath Channel

The performance in term of Bit Error Rate (BER) of smart antenna receivers calls for some simplification of the interference reduction capability. Obviously, the receiver performances arc strictly related on the efficiency of MAI reduction. In order to gain from the enhancements of both: multiuser detection and adaptive antenna, we propose in this paper a hybrid scheme of diversity and smart antennas called Hierarchical Beamforming (HBF), to jointly combat fading and MAI. Our analysis is based on modeling the HBF receiver and the description of the simulation strategy employed to simulate its performance. Moreover, we compare the performance of HBF receiver with Conventional Beamforming (CBF) one. The proposed model conforms the benefits of adaptive antennas in reducing the overall interference level (intercell/intracell) and to find an accurate approximation of the error probability.