Visible to the public Pseudo-Random Beamforming with Beam Selection for Improving Physical-Layer Security

TitlePseudo-Random Beamforming with Beam Selection for Improving Physical-Layer Security
Publication TypeConference Paper
Year of Publication2018
AuthorsSon, W., Jung, B. C., Kim, C., Kim, J. M.
Conference Name2018 Tenth International Conference on Ubiquitous and Future Networks (ICUFN)
Date Publishedjul
Keywordsantenna arrays, antennas, array signal processing, base station, beam selection, BS, Cellular networks, cellular radio, composability, Downlink, downlink cellular network, eavesdroppers, Interference, legitimate mobile stations, matrix algebra, Metrics, multiple beam forming matrices, novel pseudorandom beamforming technique, opportunistic feedback, opportunistic scheduling, optimal beamforming matrix, orthogonal beamforming vectors, physical-layer security, pubcrawl, radio links, Random beamforming, received signal-to-interference-and-noise ratio value, received SINR value, Resiliency, secrecy rate, secrecy sum-rate maximization, security, signal processing security, Signal to noise ratio, telecommunication security, Vectors, Wireless communication
AbstractIn this paper, we propose a novel pseudo-random beamforming technique with beam selection for improving physical-layer security (PLS) in a downlink cellular network where consists of a base station (BS) with Ntantennas, NMSlegitimate mobile stations (MSs), and NEeavesdroppers. In the proposed technique, the BS generates multiple candidates of beamforming matrix each of which consists of orthogonal beamforming vectors in a pseudo-random manner. Each legitimate MS opportunistically feeds back the received signal-to-interference-and-noise ratio (SINR) value for all beamforming vectors to the BS. The BS transmits data to the legitimate MSs with the optimal beamforming matrix among multiple beam forming matrices that maximizes the secrecy sum-rate. Simulation results show that the proposed technique outperforms the conventional random beamforming technique in terms of the achievable secrecy sum-rate.
Citation Keyson_pseudo-random_2018