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 journalArticlepeer-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 languageEnglish
    Article number5783010
    Pages (from-to)2028-2033
    Number of pages6
    JournalIEEE Transactions on Wireless Communications
    Volume10
    Issue number7
    DOIs
    Publication statusPublished - 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

    Fingerprint

    Dive into the research topics of 'Blockwise amplify-and-forward relaying strategies for multipoint-to- multipoint MIMO networks'. Together they form a unique fingerprint.

    Cite this