Precoding for secrecy rate maximisation in cognitive MIMO wiretap channels | Zendy

Fang Bing | Zendy; Qian Zuping | Zendy; Zhong Wei | Zendy; Shao Wei | Zendy

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Precoding for secrecy rate maximisation in cognitive MIMO wiretap channels

Author(s) -

Fang Bing,

Qian Zuping,

Zhong Wei,

Shao Wei

Publication year - 2015

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

ISSN - 1350-911X

DOI - 10.1049/el.2015.1486

Subject(s) - precoding , mimo , mathematical optimization , taylor series , channel (broadcasting) , secrecy , convex optimization , regular polygon , computer science , physical layer , optimization problem , iterative method , mathematics , wireless , telecommunications , computer security , mathematical analysis , geometry

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.

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