TIIS (한국인터넷정보학회)
Current Result Document : 5 / 5
| 한글제목(Korean Title) |
Sum MSE Minimization for Downlink Multi-Relay Multi-User MIMO Network |
| 영문제목(English Title) |
Sum MSE Minimization for Downlink Multi-Relay Multi-User MIMO Network |
| 저자(Author) |
Young-Min Cho
Janghoon Yang
Jeongwook Seo
Dong Ku Kim
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| 원문수록처(Citation) |
VOL 08 NO. 08 PP. 2722 ~ 2742 (2014. 08) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
We propose methods of linear transceiver design for two different power constraints, sum relay power constraint and per relay power constraint, which determine signal processing matrices such as base station (BS) transmitter, relay precoders and user receivers to minimize sum mean square error (SMSE) for multi-relay multi-user (MRMU) networks. However, since the formulated problem is non-convex one which is hard to be solved, we suboptimally solve the problems by defining convex subproblems with some fixed variables. We adopt iterative sequential designs of which each iteration stage corresponds to each subproblem. Karush-Kuhn-Tucker (KKT) theorem and SMSE duality are employed as specific methods to solve subproblems. The numerical results verify that the proposed methods provide comparable performance to that of a full relay cooperation bound (FRCB) method while outperforming the simple amplify-and-forward (SAF) and minimum mean square error (MMSE) relaying in terms of not only SMSE, but also the sum rate |
| 키워드(Keyword) |
MIMO
relay
MSE duality
precoding
transceiver optimization
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| 파일첨부 |
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