AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link
IEEE A two-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay system with direct link is considered in this paper. The relay node has no self-power supply and relies on harvesting the radio frequency energy transferred from the source node to forward information from source to...
| Main Authors: | , |
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| Format: | Journal Article |
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Institute of Electrical and Electronics Engineers
2018
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| Online Access: | http://purl.org/au-research/grants/arc/DP140102131 http://hdl.handle.net/20.500.11937/62127 |
| _version_ | 1848760793696305152 |
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| author | Li, B. Rong, Yue |
| author_facet | Li, B. Rong, Yue |
| author_sort | Li, B. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | IEEE A two-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay system with direct link is considered in this paper. The relay node has no self-power supply and relies on harvesting the radio frequency energy transferred from the source node to forward information from source to destination. In particular, we consider the time switching (TS) protocol between wireless information and energy transfer. We study the joint optimization of the source and relay precoding matrices and the TS factor to maximize the achievable source-destination rate when a single data stream is transmitted from the source node. The optimal structure of the source and relay precoding matrices is derived, which reduces the original problem to a simpler optimization problem. The simplified problem is then solved efficiently by a two-step method. Numerical simulations show that the proposed algorithm yields a higher rate and better rate-energy tradeoff than suboptimal approaches. |
| first_indexed | 2025-11-14T10:21:26Z |
| format | Journal Article |
| id | curtin-20.500.11937-62127 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:21:26Z |
| publishDate | 2018 |
| publisher | Institute of Electrical and Electronics Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-621272023-06-06T08:55:16Z AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link Li, B. Rong, Yue IEEE A two-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay system with direct link is considered in this paper. The relay node has no self-power supply and relies on harvesting the radio frequency energy transferred from the source node to forward information from source to destination. In particular, we consider the time switching (TS) protocol between wireless information and energy transfer. We study the joint optimization of the source and relay precoding matrices and the TS factor to maximize the achievable source-destination rate when a single data stream is transmitted from the source node. The optimal structure of the source and relay precoding matrices is derived, which reduces the original problem to a simpler optimization problem. The simplified problem is then solved efficiently by a two-step method. Numerical simulations show that the proposed algorithm yields a higher rate and better rate-energy tradeoff than suboptimal approaches. 2018 Journal Article http://hdl.handle.net/20.500.11937/62127 10.1109/TCOMM.2017.2788006 http://purl.org/au-research/grants/arc/DP140102131 Institute of Electrical and Electronics Engineers fulltext |
| spellingShingle | Li, B. Rong, Yue AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link |
| title | AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link |
| title_full | AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link |
| title_fullStr | AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link |
| title_full_unstemmed | AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link |
| title_short | AF MIMO Relay Systems with Wireless Powered Relay Node and Direct Link |
| title_sort | af mimo relay systems with wireless powered relay node and direct link |
| url | http://purl.org/au-research/grants/arc/DP140102131 http://hdl.handle.net/20.500.11937/62127 |