Abstract
In this paper, we consider multipoint-to-multipoint multi-input multi-output relay systems where multiple source-destination pairs simultaneously communicate through a single multiple antenna relay. In this system configuration, we optimize sum mean-squared-error (MSE). This problem is shown to be non-convex, and thus it is quite complex to find an analytical solution. To address this issue, we first introduce the sum MSE minimization scheme based on global channel state information (CSI) at all nodes. Then, a method which reduces complexity and CSI requirements is proposed by utilizing error covariance decomposition and MSE duality between broadcast channel and multiple access channel. Through numerical simulations, we confirm the effectiveness of our proposed schemes.
Original language | English |
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Title of host publication | GLOBECOM - IEEE Global Telecommunications Conference |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 3553-3558 |
Number of pages | 6 |
ISBN (Print) | 9781479913534 |
DOIs | |
Publication status | Published - 2013 Jan 1 |
Event | 2013 IEEE Global Communications Conference, GLOBECOM 2013 - Atlanta, GA, United States Duration: 2013 Dec 9 → 2013 Dec 13 |
Other
Other | 2013 IEEE Global Communications Conference, GLOBECOM 2013 |
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Country/Territory | United States |
City | Atlanta, GA |
Period | 13/12/9 → 13/12/13 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering