Beamforming Techniques at Both Transmitter and Receiver for Indoor Wireless Communication

Abstract

ABSTRACT In this paper, we use eight transmitter antennas and eight receiver antennas as the circle antenna arrays. Shooting and bouncing ray/image(SBR/Image)techniques combining with antenna pattern are used to calculate the impulse response in indoor wireless environment. Beamforming techniques are employed to reduce the multi-path effect of the channel and bit error rate (BER). We adjust the excitation amplitude and feed length of each array element to synthesize the pattern of the antenna array by using the genetic algorithms (GA) and self-adaptive dynamic differential evolution (SADDE). Numerical results show that SADDE algorithm outperforms GA algorithm in terms of bit error rate performance and convergence speed.