Realization of a secure wireless communication at physical layer.

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420371
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Hiroshima University
• Principal Investigator: Shuichi Ohno 広島大学, 工学(系)研究科(研究院), 准教授 (70273919)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 物理層セキュリティ / ビームフォーミング / 盗聴

Outline of Final Research Achievements

If a base station of a wireless communication system has multiple transmit antennas, it is possible to control the direction of its transmitted signal by using beamforming. On the other hand, if the receiver has multiple receive antennas, it is possible to enhance the received signal by using beamforming.
We consider a wireless LAN, where the base station utilizes beamforming to combat colluding eavesdroppers with multiple antennas and transmitting artificial noises. The beamformer and the artificial noises are optimally designed to achieve the prescribed signal to interference and noise ratio (SINR) at the legitimate receiver and the maximum allowable SINR at the eavesdroppers.

Free Research Field

通信・ネットワーク工学