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arXiv 1004.0899cs.ITmath.IT
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用于物理层安全的中继波束成形策略

Relay Beamforming Strategies for Physical-Layer Security

Junwei Zhang, Mustafa Cenk Gursoy

摘要:

在本文中,协作使用中继形成一个波束成形系统,并提供物理层的安全性进行了研究。特别是,放大和转发(AF)中继波束成形设计下的总和个人中继功率约束的研究与保密率最大化的目标时,完美的信道状态信息(CSI)是可用的。在AF方案中,没有解析解的最优波束形成设计下的总功率和个人的约束,提出了一种迭代算法,以获得最优的波束形成结构,并最大化的保密率。针对基于解码转发(DF)的中继波束成形,研究了不完美信道状态信息(CSI)下的稳健波束成形设计,并给出了优化框架。

英文摘要:

In this paper, collaborative use of relays to form a beamforming system and provide physical-layer security is investigated. In particular, amplify-and-forward (AF) relay beamforming designs under total and individual relay power constraints are studied with the goal of maximizing the secrecy rates when perfect channel state information (CSI) is available. In the AF scheme, not having analytical solutions for the optimal beamforming design under both total and individual power constraints, an iterative algorithm is proposed to numerically obtain the optimal beamforming structure and maximize the secrecy rates. Robust beamforming designs in the presence of imperfect CSI are investigated for decode-and-forward (DF) based relay beamforming, and optimization frameworks are provided.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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