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On the Secrecy Rate of Limited Feedback Beamforming over Multiple-Input Single-Output Wiretap Channels 被引量：2

On the Secrecy Rate of Limited Feedback Beamforming over Multiple-Input Single-Output Wiretap Channels
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摘要 The secrecy rate of limited feedback beamforming is studied for a Multiple-Input Single-Output(MISO) wiretap channel with a multi-antenna eavesdropper.We first obtain the secrecy rate of limited feedback beamforming achieved at the legitimate receiver.We then derive a lower bound for the asymptotic secrecy rate in the large system limit.From this bound,we observe a threshold for the ratio of eavesdrop antennas to transmit antennas to obtain a positive secrecy rate.We further show that the secrecy rate loss due to limited feedback decays with the number of feedback bits per transmit antenna. The secrecy rate of limited feedback beamforming is studied for a Multiple-Input Single-Output （MISO） wiretap channel with a multi-antenna eavesdropper. We first obtain the secrecy rate of limited feedback beamforming achieved at the legitimate receiver. We then derive a lower bound for the asymptotic secrecy rate in the large system limit, From this bound, we observe a threshold for the ratio of eavesdrop antennas to transmit antennas to obtain a positive secrecy rate. We further show that the secrecy rate loss due to limited feedback decays with the number of feedback bits per transmit antenna.
作者 TANG Yanqun XIONG Jun XI Yong YANG Yang
机构地区 PLA Information Engineering University School of Electronic Science and Engineering Shanghai Institute of Microsystem and Information Technology
出处 《China Communications》 SCIE CSCD 2014年第3期118-124,共7页 中国通信（英文版）
基金 This work was supported in part by the National Natural Science Foundation of China under Grants No.61372099,and No.61302140
关键词 多输入单输出 波束形成 反馈 窃听 信道 保密 速率 发射天线 beamforming limited feedback physical layer security secrecy rate wiretapchannels
分类号 TN929.533 [电子电信—通信与信息系统] TP273 [自动化与计算机技术—检测技术与自动化装置]
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参考文献12

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引证文献2

China Communications
2014年 第3期

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