Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems
In this paper, we address the issue of multiaccess communication through multi-hop linear non-regenerative relays, where all users, all relay nodes, and the destination node may have multiple antennas. Using a linear minimal mean-squared error (MMSE) receiver at the destination node, we demonstrate...
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| Format: | Journal Article |
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Institute of Electical and Electronic Engineers
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/8919 |
| _version_ | 1848745799988543488 |
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| author | Rong, Yue |
| author_facet | Rong, Yue |
| author_sort | Rong, Yue |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, we address the issue of multiaccess communication through multi-hop linear non-regenerative relays, where all users, all relay nodes, and the destination node may have multiple antennas. Using a linear minimal mean-squared error (MMSE) receiver at the destination node, we demonstrate that the optimal amplifying matrix at each relay node can be viewed as a linear MMSE filter concatenated with another linear filter. As a consequence, the MSE matrix of the signal waveform estimation at the destination node is decomposed into the sum of the MSE matrices at all relay nodes. We show that at a high signal-to-noise ratio (SNR) environment, this MSE matrix decomposition significantly simplifies the solution to the problem of optimizing the source precoding matrices and relay amplifying matrices. Simulation results show that even at the low to medium SNR range, the simplified optimization algorithms have only a marginal performance degradation but a greatly reduced computational complexity and signalling overhead compared with the existing optimal iterative algorithm, and thus are of great interest for practical relay systems. |
| first_indexed | 2025-11-14T06:23:06Z |
| format | Journal Article |
| id | curtin-20.500.11937-8919 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:23:06Z |
| publishDate | 2011 |
| publisher | Institute of Electical and Electronic Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-89192018-03-29T09:05:40Z Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems Rong, Yue Multiuser MIMO relay MMSE Multi-hop relay In this paper, we address the issue of multiaccess communication through multi-hop linear non-regenerative relays, where all users, all relay nodes, and the destination node may have multiple antennas. Using a linear minimal mean-squared error (MMSE) receiver at the destination node, we demonstrate that the optimal amplifying matrix at each relay node can be viewed as a linear MMSE filter concatenated with another linear filter. As a consequence, the MSE matrix of the signal waveform estimation at the destination node is decomposed into the sum of the MSE matrices at all relay nodes. We show that at a high signal-to-noise ratio (SNR) environment, this MSE matrix decomposition significantly simplifies the solution to the problem of optimizing the source precoding matrices and relay amplifying matrices. Simulation results show that even at the low to medium SNR range, the simplified optimization algorithms have only a marginal performance degradation but a greatly reduced computational complexity and signalling overhead compared with the existing optimal iterative algorithm, and thus are of great interest for practical relay systems. 2011 Journal Article http://hdl.handle.net/20.500.11937/8919 10.1109/TCOMM.2011.081111.100756 Institute of Electical and Electronic Engineers restricted |
| spellingShingle | Multiuser MIMO relay MMSE Multi-hop relay Rong, Yue Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems |
| title | Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems |
| title_full | Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems |
| title_fullStr | Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems |
| title_full_unstemmed | Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems |
| title_short | Simplified Algorithms for Optimizing Multiuser Multi-Hop MIMO Relay Systems |
| title_sort | simplified algorithms for optimizing multiuser multi-hop mimo relay systems |
| topic | Multiuser MIMO relay MMSE Multi-hop relay |
| url | http://hdl.handle.net/20.500.11937/8919 |