Blockwise Amplify-and-Forward Relaying Strategies for Multipoint-to-Multipoint MIMO Networks
- Authors
- Kim, Jaesin; Hwang, Jeongho; Lee, Kyoung-Jae; Lee, Inkyu
- Issue Date
- 7월-2011
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Multiple-input multiple-output (MIMO); amplify-and-forward (AF) relay; blockwise relaying; sum rate maximization
- Citation
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.10, no.7, pp.2028 - 2033
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
- Volume
- 10
- Number
- 7
- Start Page
- 2028
- End Page
- 2033
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/112077
- DOI
- 10.1109/TWC.2011.052311.101493
- ISSN
- 1536-1276
- Abstract
- In this letter, we consider a multipoint-to-multipoint transmission system which employs a single relay in wireless networks where all source, destination and relay nodes are equipped with multiple antennas. For amplify-and-forward relay systems, we propose new linear processing strategies for maximizing the sum rate performance by applying a blockwise relaying method combined with convex optimization techniques. To reduce a computational complexity, we first consider a zero-forcing based relay only optimization scheme, which generate a closed-form solution in a non-iterative fashion. In order to further improve the sum rate at low signal-to-noise ratio regimes, we additionally design an enhanced relay filter by exploiting the blockwise relaying method based on a minimum mean-square error criterion. Simulation results show that the proposed relay design strategies outperform the existing conventional schemes in terms of the sum rate.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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