Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes
In this paper, we consider the channel estimation problem for multiple-input multiple-output wireless relay communication systems with multiple relay nodes. In particular, all individual channel matrices of the first-hop and second-hop links are estimated at the destination node by applying the supe...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2017-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8115147/ |
| _version_ | 1818331692650201088 |
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| author | Zhiqiang He Jiaolong Yang Xiaodan Wang Yang Liu Yue Rong |
| author_facet | Zhiqiang He Jiaolong Yang Xiaodan Wang Yang Liu Yue Rong |
| author_sort | Zhiqiang He |
| collection | DOAJ |
| description | In this paper, we consider the channel estimation problem for multiple-input multiple-output wireless relay communication systems with multiple relay nodes. In particular, all individual channel matrices of the first-hop and second-hop links are estimated at the destination node by applying the superimposed channel training algorithm, where training sequences are superimposed at the relay nodes to assist the estimation of the relays-destination channel matrices. To improve the performance of channel estimation, we consider the estimation error inherited from the second-hop channel estimation and develop a new minimal mean-squared error-based algorithm to estimate the first-hop channel matrices. Furthermore, we derive the optimal power allocation and training sequences at the source and relay nodes. Numerical examples demonstrate a better performance of the proposed superimposed channel training algorithm. |
| first_indexed | 2024-12-13T13:23:53Z |
| format | Article |
| id | doaj.art-44fed4e6784742f0981cd3a9049657de |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-13T13:23:53Z |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-44fed4e6784742f0981cd3a9049657de2022-12-21T23:44:20ZengIEEEIEEE Access2169-35362017-01-015276492765810.1109/ACCESS.2017.27752028115147Channel Estimation of MIMO Relay Systems With Multiple Relay NodesZhiqiang He0Jiaolong Yang1Xiaodan Wang2Yang Liu3Yue Rong4https://orcid.org/0000-0002-5831-7479Key Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, ChinaKey Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, ChinaKey Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, ChinaKey Laboratory of Universal Wireless Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, ChinaDepartment of Electrical and Computer Engineering, Curtin University, Bentley, WA, AustraliaIn this paper, we consider the channel estimation problem for multiple-input multiple-output wireless relay communication systems with multiple relay nodes. In particular, all individual channel matrices of the first-hop and second-hop links are estimated at the destination node by applying the superimposed channel training algorithm, where training sequences are superimposed at the relay nodes to assist the estimation of the relays-destination channel matrices. To improve the performance of channel estimation, we consider the estimation error inherited from the second-hop channel estimation and develop a new minimal mean-squared error-based algorithm to estimate the first-hop channel matrices. Furthermore, we derive the optimal power allocation and training sequences at the source and relay nodes. Numerical examples demonstrate a better performance of the proposed superimposed channel training algorithm.https://ieeexplore.ieee.org/document/8115147/Channel estimationMIMO relayMMSEmultiple relay nodespower allocationsuperimposed training |
| spellingShingle | Zhiqiang He Jiaolong Yang Xiaodan Wang Yang Liu Yue Rong Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes IEEE Access Channel estimation MIMO relay MMSE multiple relay nodes power allocation superimposed training |
| title | Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes |
| title_full | Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes |
| title_fullStr | Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes |
| title_full_unstemmed | Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes |
| title_short | Channel Estimation of MIMO Relay Systems With Multiple Relay Nodes |
| title_sort | channel estimation of mimo relay systems with multiple relay nodes |
| topic | Channel estimation MIMO relay MMSE multiple relay nodes power allocation superimposed training |
| url | https://ieeexplore.ieee.org/document/8115147/ |
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