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2010
IEEE

Optimality of Diagonalization of Multicarrier Multi-Hop Linear Non-Regenerative MIMO Relays

8 years 10 months ago
Optimality of Diagonalization of Multicarrier Multi-Hop Linear Non-Regenerative MIMO Relays
Abstract—In this paper, a multicarrier multi-hop multipleinput multiple-output (MIMO) relay system is investigated. A linear non-regenerative strategy is applied at each relay node. We show that for Schur-concave objective functions, the optimal source precoding matrix, the optimal relay amplifying matrices and the optimal receiving matrix jointly diagonalize the multicarrier multi-hop MIMO relay channel. And for Schur-convex objectives, such joint diagonalization along with a rotation of the source precoding matrix is also shown to be optimal. Using the optimal structure of the source and relay matrices, the multi-hop relay design problem boils down to the issue of power loading among the resulting parallel multi-hop single-input single-output (SISO) relay channels. This paper provides additional details of the multicarrier version of some of our recent results.
Yue Rong, Yingbo Hua
Added 16 Aug 2010
Updated 16 Aug 2010
Type Conference
Year 2010
Where WCNC
Authors Yue Rong, Yingbo Hua
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