Blockwise amplify-and-forward relaying strategies for multipoint-to- multipoint MIMO networks

Jaesin Kim; Jeongho Hwang; Kyoung Jae Lee; Inkyu Lee

doi:10.1109/TWC.2011.052311.101493

Blockwise amplify-and-forward relaying strategies for multipoint-to- multipoint MIMO networks

Jaesin Kim, Jeongho Hwang, Kyoung Jae Lee, Inkyu Lee

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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.

Original language	English
Article number	5783010
Pages (from-to)	2028-2033
Number of pages	6
Journal	IEEE Transactions on Wireless Communications
Volume	10
Issue number	7
DOIs	https://doi.org/10.1109/TWC.2011.052311.101493
Publication status	Published - 2011 Jul

Bibliographical note

Funding Information:
This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No.2010-0017909), and in part by Seoul R&BD program (ST 090852). A part of this work was presented at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Tokyo, Japan, September 2009.

Keywords

Multiple-input multiple-output (MIMO)
amplify-and-forward (AF) relay
blockwise relaying
sum rate maximization

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/TWC.2011.052311.101493

Cite this

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title = "Blockwise amplify-and-forward relaying strategies for multipoint-to- multipoint MIMO networks",

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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author = "Jaesin Kim and Jeongho Hwang and Lee, {Kyoung Jae} and Inkyu Lee",

note = "Funding Information: This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No.2010-0017909), and in part by Seoul R&BD program (ST 090852). A part of this work was presented at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Tokyo, Japan, September 2009.",

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N1 - Funding Information: This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No.2010-0017909), and in part by Seoul R&BD program (ST 090852). A part of this work was presented at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Tokyo, Japan, September 2009.

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Blockwise amplify-and-forward relaying strategies for multipoint-to- multipoint MIMO networks

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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