Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization
In this paper, we consider multiuser multihop relay communication systems, where the users, relays, and the destination node may have multiple antennas. We address the issue of source and relay precoding matrices design to maximize the system mutual information (MI). By exploiting the linkbetween th...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Institute of Electrical and Electronics Engineers
2014
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DP140102131 http://hdl.handle.net/20.500.11937/17548 |
| _version_ | 1848749494959603712 |
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| author | He, Z. Guo, S. Ou, Y. Rong, Yue |
| author_facet | He, Z. Guo, S. Ou, Y. Rong, Yue |
| author_sort | He, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, we consider multiuser multihop relay communication systems, where the users, relays, and the destination node may have multiple antennas. We address the issue of source and relay precoding matrices design to maximize the system mutual information (MI). By exploiting the linkbetween the maximal MI and the weighted minimal mean-squared error (WMMSE) objective functions, we show that the intractable maximal MI-based source and relay optimization problem can be solved via the WMMSE-based source and relay design through an iterative approach which is guaranteed toconverge to at least a stationary point. For the WMMSE problem, we derive the optimal structure of the relay precoding matrices and show that the WMMSE matrix at the destination node can be decomposed into the sum of WMMSE matrices at all hops. Under a (moderately) high signal-to-noise ratio (SNR) condition, this WMMSE matrix decomposition significantly simplifies the solution to the WMMSE problem. Numerical simulations are performed to demonstrate the effectiveness of the proposed algorithm. |
| first_indexed | 2025-11-14T07:21:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-17548 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:21:50Z |
| publishDate | 2014 |
| publisher | Institute of Electrical and Electronics Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-175482022-09-06T04:49:54Z Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization He, Z. Guo, S. Ou, Y. Rong, Yue multiuser multihop relay MIMO relay mutual information In this paper, we consider multiuser multihop relay communication systems, where the users, relays, and the destination node may have multiple antennas. We address the issue of source and relay precoding matrices design to maximize the system mutual information (MI). By exploiting the linkbetween the maximal MI and the weighted minimal mean-squared error (WMMSE) objective functions, we show that the intractable maximal MI-based source and relay optimization problem can be solved via the WMMSE-based source and relay design through an iterative approach which is guaranteed toconverge to at least a stationary point. For the WMMSE problem, we derive the optimal structure of the relay precoding matrices and show that the WMMSE matrix at the destination node can be decomposed into the sum of WMMSE matrices at all hops. Under a (moderately) high signal-to-noise ratio (SNR) condition, this WMMSE matrix decomposition significantly simplifies the solution to the WMMSE problem. Numerical simulations are performed to demonstrate the effectiveness of the proposed algorithm. 2014 Journal Article http://hdl.handle.net/20.500.11937/17548 10.1109/TSP.2014.2357785 http://purl.org/au-research/grants/arc/DP140102131 Institute of Electrical and Electronics Engineers fulltext |
| spellingShingle | multiuser multihop relay MIMO relay mutual information He, Z. Guo, S. Ou, Y. Rong, Yue Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization |
| title | Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization |
| title_full | Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization |
| title_fullStr | Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization |
| title_full_unstemmed | Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization |
| title_short | Multiuser Multihop MIMO Relay System Design Based on Mutual Information Maximization |
| title_sort | multiuser multihop mimo relay system design based on mutual information maximization |
| topic | multiuser multihop relay MIMO relay mutual information |
| url | http://purl.org/au-research/grants/arc/DP140102131 http://hdl.handle.net/20.500.11937/17548 |