The growth of interest in massive MIMO systems is accompanied with hardware cost and computational complexity. Antenna selection is an efficient approach to overcome this cost-plus-complexity issue which also enhances the secrecy performance in wiretap settings. Optimal antenna selection requires exhaustive search which is computationally infeasible for settings with large dimensions. This paper develops an iterative algorithm for antenna selection in massive multiuser MIMO wiretap settings. The algorithm takes a stepwise approach to find a suitable subset of transmit antennas. Numerical investigations depict a significant enhancement in the secrecy performance.
@article{arxiv.1805.11915,
title = {Iterative Antenna Selection for Secrecy Enhancement in Massive MIMO Wiretap Channels},
author = {Ali Bereyhi and Saba Asaad and Rafael F. Schaefer and Ralf R. Müller},
journal= {arXiv preprint arXiv:1805.11915},
year = {2018}
}
Comments
5 pages, 1 figure; To be presented in 19th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), June 2018