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Joint beamforming and antenna subarray formation for secrecy capacity maximization in MIMO wiretap channels

机译:联合波束成形和天线子阵列形成,可最大程度提高MIMO窃听通道的保密能力

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摘要

The antenna subarray formation (ASF) is a promising technique for multiple-input multiple-output (MIMO) receiver. For MIMO wiretap channels, we employ the ASF matrix at the legitimate receiver and propose new alternative optimization (AO) scheme which jointly designs transmit covariance matrix and ASF matrix to maximize the secrecy capacity. Simulation results have shown that the proposed ASF schemes outperform the conventional antenna selection scheme under the same number of radio frequency (RF) chains.
机译:天线子阵列形成(ASF)是一种用于多输入多输出(MIMO)接收机的有前途的技术。对于MIMO窃听信道,我们在合法接收器处采用ASF矩阵,并提出了新的替代优化(AO)方案,该方案共同设计了发射协方差矩阵和ASF矩阵,以最大程度地提高保密能力。仿真结果表明,在相同数量的射频(RF)链下,所提出的ASF方案优于传统的天线选择方案。

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