NDLI: Two-Way MIMO Relay Precoder Design with Channel State Information

Content Provider	IEEE Xplore Digital Library
Author	Chunguo Li Luxi Yang Wei-Ping Zhu
Copyright Year	1972
Abstract	In this paper, a two-way relay precoder is designed for multiple-input multiple-output (MIMO) distributed cooperative relay systems. A constrained optimization problem with respect to (w.r.t.) the relay precoder is formulated for the most general relay and antenna scenario, namely, multiple relays each with multiple antennas, It is shown that due to the difficulty of two-way distributed relaying mechanism as well as the block-diagonal nature of the relay precoding matrix, this optimization problem cannot be solved by existing one-way relaying methods. It is then proved that with full channel state information available at relays, the underlying problem can be converted to a convex optimization w.r.t. the non-zero entries of the relay precoding matrix only, such that the Lagrangian multiplier method is applicable to the relay precoder design, leading to a closed-form relay precoding solution. A simulation study is conducted to justify the superior performance of the proposed two-way relaying scheme.
Starting Page	3358
Ending Page	3363
Page Count	6
File Size	230453
File Format	PDF
ISSN	00906778
Volume Number	58
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Cooperative systems Relays Mean square error methods amplify-and-forward Cooperative relays two-way relay precoding mean squared error (MSE) multiple-input multiple-output (MIMO)
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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