Adaptive Antenna Array with weight and antenna space control

A typical adaptive antenna array based on weight control (AAA-W) with M antennas can suppress M-1 interference signals. In this paper, we propose AAA based on not only weight but also antenna spacing control (AAA-WS) and investigate the basic performance of AAA-WS under the line-of-sight. At first, we show that AAA-WS with two antennas (M=2) can sufficiently suppress more than two interference signals while the desired signal is enhanced. The inherent interference suppression capability of AAA-WS can be determined by the maximum antenna spacing and this fact is exhibited by analysis and Monte Carlo simulations. In addition, we will show that AAA-WS with two antennas can outperform AAA-W with more than two antennas. It is notable that the additional gain in AAAWS compared to AAA-W can be around 18 dB.

Authors:
Umebayashi Kenta, Kimoto Yoshimasa, Tölli Antti

Publication type:
A4 Article in conference proceedings

Place of publication:
2020 IEEE Wireless Communications and Networking Conference (WCNC)

Keywords:
Adaptive antenna array, Antenna space control, beamforming, Interference suppression, Line of sight

Published:

Full citation:
K. Umebayashi, Y. Kimoto and A. Tölli, “Adaptive Antenna Array with weight and antenna space control,” 2020 IEEE Wireless Communications and Networking Conference (WCNC), Seoul, Korea (South), 2020, pp. 1-6, doi: 10.1109/WCNC45663.2020.9120775

DOI:
https://doi.org/10.1109/WCNC45663.2020.9120775

Read the publication here:
http://urn.fi/urn:nbn:fi-fe2020113097421