Precoding for secrecy rate maximisation in cognitive MIMO wiretap channels. Issue 21 (1st October 2015)

• Record Type: Journal Article
• Authors: Fang, Bing; Qian, Zuping; Zhong, Wei; Shao, Wei
• Is Part Of: Electronics letters. Volume 51:Issue 21(2015)
• Page Start: 1715
• Page End: 1717
• Publication Date: 2015-10-01
• Subjects: optimisation -- precoding -- cognitive radio -- MIMO communication -- wireless channels -- iterative methods -- approximation theory; secrecy rate maximisation precoding -- SRM problem -- cognitive multiple‐input–multiple‐output wiretap channel -- cognitive MIMO wiretap channels -- physical layer security -- successive convex approximation method -- SCA method -- Taylor expansion -- iterative precoding algorithm; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.1486
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : The problem of physical layer security in a cognitive MIMO wiretap channel is studied. The problem is formulated as a secrecy rate maximisation (SRM) problem, and solved by a successive convex approximation (SCA) method. With the SCA method, the non‐convex part of the SRM problem is approximated by its first‐order Taylor expansion. Then, relying on solving a series of convexified optimisation problems, an iterative precoding algorithm is developed.