Performance of a Beam-Steering Antenna in Interference-limited Multiuser Networks

Z. Li
E. Ahmed
C. P. Sukumar
A. Eltawil
Bedri A. Cetiner, Utah State University

Originally published by IET in IET Microwaves, Antennas and Propagation.


This paper studies the performance gains obtained by utilizing a parasitic layer based beam steering patch antenna in interference limited multiuser networks. The beam-steering antenna employed is capable of steering its beam in three directions (θm = - 30o, 0o, 30o), where θm = 0o being the broadside direction. The operation frequency range is 5.4 – 5.6 GHz. In the simulations, a directional cluster based channel model is used. Two different beam selection schemes are considered, namely a) Signal to Interference plus Noise Ratio (SINR) and b) Signal to Leakage plus Noise Ratio (SLNR) and the corresponding results have been compared. The results show that this beam steering antenna outperforms the regular patch antennas across all values of SNR with SLNR being a more practical scheme as compared to SINR.