MISO窃听信道中友军干扰的零强迫最优性研究

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI:10.1109/SPAWC.2010.5671002

A. Wolf, Eduard Axel Jorswieck

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引用次数: 27

摘要

我们研究了MISO窃听信道中友好干扰机(或助手)的波束形成策略。我们描述了保密率最大化的波束形成策略，并分析了零强迫的最优性。我们表明，零强迫是最优的，直到一个小常数的高信噪比。对于低信噪比，我们根据最小Eb/N0和宽带斜率推导出发射机和辅助器的最佳波束形成策略。

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On the zero forcing optimality for friendly jamming in MISO wiretap channels

We study beamforming strategies for a friendly jammer (or helper) in a MISO wiretap channel. We characterize the beamforming strategy for the maximization of the secrecy rate and analyze the optimality of zero forcing. We show that zero forcing is optimal up to a small constant for high SNR. For low SNR, we derive optimal beamforming strategies for transmitter and helper in terms of minimum Eb/N0 and wideband slope.

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来源期刊

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

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