NDLI: Joint source/relay precoding designs in MIMO two-way AF relay systems with MMSE-SIC receiver

Content Provider	IEEE Xplore Digital Library
Author	Yinke Shi Zhengyu Zhang Ling Qiu
Copyright Year	2013
Description	Author affiliation: Personal Commun. Network & Spread Spectrum Lab. (PCN&SS), Univ. of Sci. & Technol. of China (USTC), Hefei, China (Yinke Shi; Zhengyu Zhang; Ling Qiu)
Abstract	This paper considers the joint source and relay linear precoding designs in three-node two-way amplify-and-forward (AF) multiple-input-multiple-output (MIMO) relay systems with the minimum-mean-squared-error (MMSE) successive-interference-cancelation (SIC) receiver. The designs are based on the criterion of minimizing the sum block error rate (sum-BLER). The primal optimization problem is nonconvex and remains unsolved. Aming to find an efficient way to solve the problem, we first resort to the primal decomposition approach where the optimization problem is decoupled into two subproblems called master optimization problem and subproblem optimization problem. Then the source precoding matrices can be derived as a function of the relay precoding matrix by solving the subproblem optimization problem when assuming both of the source precoders have unitary structure. Finally, we propose a structure of the relay precoding matrix with which the master optimization problem can be transferred to a water-filling power allocation problem. Based on the Karuch-Kuhn-Tucker (KKT) conditions, a closed-form solution can be further derived. Numerical results are shown to evaluate the effectiveness of our proposed precoding designs.
Sponsorship	IEEE Commun. Soc.
Starting Page	2733
Ending Page	2738
File Size	303284
Page Count	6
File Format	PDF
ISBN	9781467359382
ISSN	15253511
e-ISBN	9781467359399
e-ISBN	9781467359375
DOI	10.1109/WCNC.2013.6554994
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Optimization MIMO Receivers Vectors Silicon Matrices precoding Amplify-and-forward relaying minimum-meansquared-error successive interference cancelation (MMSE-SIC) multiple-input-multiple-output (MIMO) two-way protocol
Content Type	Text
Resource Type	Article

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