Multihop Nonregenerative MIMO Relays - QoS Considerations
For nonregenerative multihop multiple-input multiple-output (MIMO) relay communication systems, the optimal source precoding matrix and the optimal relay amplifying matrices have been recently established for a broad class of objective functions subjecting to the transmission power constraint at eac...
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| Format: | Journal Article |
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IEEE Signal Processing Society
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/40901 |
| _version_ | 1848755995237416960 |
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| author | Rong, Yue |
| author_facet | Rong, Yue |
| author_sort | Rong, Yue |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | For nonregenerative multihop multiple-input multiple-output (MIMO) relay communication systems, the optimal source precoding matrix and the optimal relay amplifying matrices have been recently established for a broad class of objective functions subjecting to the transmission power constraint at each node. However, existing works do not consider any quality-of-service (QoS) constraints, which are important in practical communication systems. In this paper, we derive the optimal source and relay matrices of a multihop MIMO relay system that guarantee the predetermined QoS criteria be attained with the minimal total transmission power. In particular, we consider two types of receivers at the destination node: the linear minimal mean-squared error (MMSE) receiver and the nonlinear decision feedback equalizer (DFE) based on the MMSE criterion. We show that for both types of receivers, the solution to the original optimization problem can be upper-bounded by using a successive geometric programming (GP) approach and lower-bounded by utilizing a dual decomposition technique. Simulation results show that both bounds are tight, and to obtain the same QoS, the MIMO relay system using the nonlinear MMSE-DFE receiver requires substantially less total transmission power than the linear MMSE receiver-based system. |
| first_indexed | 2025-11-14T09:05:09Z |
| format | Journal Article |
| id | curtin-20.500.11937-40901 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:05:09Z |
| publishDate | 2011 |
| publisher | IEEE Signal Processing Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-409012017-09-13T15:59:27Z Multihop Nonregenerative MIMO Relays - QoS Considerations Rong, Yue QoS MIMO relay majorization linear non-regenerative relay multi-hop relay MMSE For nonregenerative multihop multiple-input multiple-output (MIMO) relay communication systems, the optimal source precoding matrix and the optimal relay amplifying matrices have been recently established for a broad class of objective functions subjecting to the transmission power constraint at each node. However, existing works do not consider any quality-of-service (QoS) constraints, which are important in practical communication systems. In this paper, we derive the optimal source and relay matrices of a multihop MIMO relay system that guarantee the predetermined QoS criteria be attained with the minimal total transmission power. In particular, we consider two types of receivers at the destination node: the linear minimal mean-squared error (MMSE) receiver and the nonlinear decision feedback equalizer (DFE) based on the MMSE criterion. We show that for both types of receivers, the solution to the original optimization problem can be upper-bounded by using a successive geometric programming (GP) approach and lower-bounded by utilizing a dual decomposition technique. Simulation results show that both bounds are tight, and to obtain the same QoS, the MIMO relay system using the nonlinear MMSE-DFE receiver requires substantially less total transmission power than the linear MMSE receiver-based system. 2011 Journal Article http://hdl.handle.net/20.500.11937/40901 10.1109/TSP.2010.2087328 IEEE Signal Processing Society fulltext |
| spellingShingle | QoS MIMO relay majorization linear non-regenerative relay multi-hop relay MMSE Rong, Yue Multihop Nonregenerative MIMO Relays - QoS Considerations |
| title | Multihop Nonregenerative MIMO Relays - QoS Considerations |
| title_full | Multihop Nonregenerative MIMO Relays - QoS Considerations |
| title_fullStr | Multihop Nonregenerative MIMO Relays - QoS Considerations |
| title_full_unstemmed | Multihop Nonregenerative MIMO Relays - QoS Considerations |
| title_short | Multihop Nonregenerative MIMO Relays - QoS Considerations |
| title_sort | multihop nonregenerative mimo relays - qos considerations |
| topic | QoS MIMO relay majorization linear non-regenerative relay multi-hop relay MMSE |
| url | http://hdl.handle.net/20.500.11937/40901 |