AMPLIFY-AND-FORWARD BASED COOPERATION FOR SECURE WIRELESS COMMUNICATIONS

被引：35

作者：

Dong, Lun ^{[1
]}

Han, Zhu ^{[2
]}

Petropulu, Athina R. ^{[1
]}

Poor, H. Vincent ^{[3
]}

机构：

[1] Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA

[2] Univ Houston, Dept Elect & Comp Engn, Houston, TX 77004 USA

[3] Princeton Univ, Sch Engn & Appl Sci, Princeton, NJ 08544 USA

来源：

2009 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1- 8, PROCEEDINGS | 2009年

基金：

美国国家科学基金会;

关键词：

physical layer based wireless security; cooperation; amplify-and-forward; secrecy capacity;

D O I：

10.1109/ICASSP.2009.4960158

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A physical layer approach to security for wireless networks is considered. In single-antenna wireless systems, such approaches are hampered by channel conditions in the presence of one or more eavesdroppers. Cooperation has the potential to overcome this problem and improve the security of of wireless communications. In this paper, an amplify-and-forward based cooperative protocol is proposed. Assuming availability of global channel state information, system design that maximizes the secrecy capacity is considered. Since the optimal solution to this problem is intractable, suboptimal closed-form solutions are proposed that optimize bounds on secrecy capacity for the case of a single eavesdropper, or that introduce additional constraints, such as nulling of signals at all eavesdroppers, for the case of multiple eavesdroppers.

引用

页码：2613 / +

页数：2

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