Joint Transmit Antenna Selection and Artificial Noise for Security in MIMO Wiretap Channels

Abstract:

In this paper, We propose a effective method which joint transmit antenna selection (TAS) and artificial noise to promote communication security in MIMO wiretap channels. Firstly, based on TAS protocol, the transmitter selects one antenna (the max-antenna) that maximizes the instantaneous signal-noise-ratio (SNR) at the receiver. Secondly, the transmitter uses the max-antenna to transmit valid data, and simultaneously, uses the remaining antennas to transmit artificial noise which only affects the eavesdropper. Thirdly, The receiver and the eavesdropper employ maximal-ratio combining (MRC) to combine the received signals. We focus on the practical scenario where the transmitter does not have any channel state information (CSI) of the eavesdroppers channel. Our joint TAS and artificial noise scheme (TAS-AN) have low complexity, and can enhance the systems security. The numerical simulation results verify our analysis.

• Periodical: Applied Mechanics and Materials (Volumes 541-542)
• Pages: 1452-1457
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.541-542.1452
• Online since: March 2014
• Authors: Tao Liang, Ya Jun Zhang*, Guo Bin Yuan, Li Guo
• Keywords: Artificial Noise, MIMO, Physical Layer Security, Transmit Antenna Selection

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