Channel training algorithms for two-way MIMO relay systems
Two-way relay systems are known to be capable of providing higher spectral efficiency compared with conventional one-way relay systems. However, the channel estimation problem for two-way relay systems is more complicated than that of one-way relay systems. In this paper, we propose and compare two...
| Main Authors: | , , |
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| Format: | Journal Article |
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I E E E
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/40681 |
| _version_ | 1848755935980290048 |
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| author | Chiong, Choo Rong, Yue Xiang, Y. |
| author_facet | Chiong, Choo Rong, Yue Xiang, Y. |
| author_sort | Chiong, Choo |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Two-way relay systems are known to be capable of providing higher spectral efficiency compared with conventional one-way relay systems. However, the channel estimation problem for two-way relay systems is more complicated than that of one-way relay systems. In this paper, we propose and compare two channel estimation algorithms, namely the superimposed channel training scheme and the two-stage channel estimation algorithm, for two-way multiple-input multiple-output (MIMO) relay communication systems, where the individual channel state information (CSI) for the first-hop and second-hop links is estimated. For both algorithms, we derive the optimal structure of the source and relay training sequences which minimize the mean-squared error (MSE) of channel estimation. In the superimposed channel training scheme, the power allocation between the source and relay training sequences is optimized. For the two-stage channel estimation algorithm, we optimize the power allocation at the relay node between two stages to improve the performance of the algorithm. Numerical examples are shown to demonstrate and compare the performance of the proposed channel training algorithms. |
| first_indexed | 2025-11-14T09:04:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-40681 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:04:13Z |
| publishDate | 2013 |
| publisher | I E E E |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-406812017-09-13T15:56:52Z Channel training algorithms for two-way MIMO relay systems Chiong, Choo Rong, Yue Xiang, Y. two-way relay superimposed training MIMO relay MMSE power allocation channel estimation Two-way relay systems are known to be capable of providing higher spectral efficiency compared with conventional one-way relay systems. However, the channel estimation problem for two-way relay systems is more complicated than that of one-way relay systems. In this paper, we propose and compare two channel estimation algorithms, namely the superimposed channel training scheme and the two-stage channel estimation algorithm, for two-way multiple-input multiple-output (MIMO) relay communication systems, where the individual channel state information (CSI) for the first-hop and second-hop links is estimated. For both algorithms, we derive the optimal structure of the source and relay training sequences which minimize the mean-squared error (MSE) of channel estimation. In the superimposed channel training scheme, the power allocation between the source and relay training sequences is optimized. For the two-stage channel estimation algorithm, we optimize the power allocation at the relay node between two stages to improve the performance of the algorithm. Numerical examples are shown to demonstrate and compare the performance of the proposed channel training algorithms. 2013 Journal Article http://hdl.handle.net/20.500.11937/40681 10.1109/TSP.2013.2265223 I E E E fulltext |
| spellingShingle | two-way relay superimposed training MIMO relay MMSE power allocation channel estimation Chiong, Choo Rong, Yue Xiang, Y. Channel training algorithms for two-way MIMO relay systems |
| title | Channel training algorithms for two-way MIMO relay systems |
| title_full | Channel training algorithms for two-way MIMO relay systems |
| title_fullStr | Channel training algorithms for two-way MIMO relay systems |
| title_full_unstemmed | Channel training algorithms for two-way MIMO relay systems |
| title_short | Channel training algorithms for two-way MIMO relay systems |
| title_sort | channel training algorithms for two-way mimo relay systems |
| topic | two-way relay superimposed training MIMO relay MMSE power allocation channel estimation |
| url | http://hdl.handle.net/20.500.11937/40681 |