Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints
In this paper, we consider the joint design of source precoding matrix and the relay precoding matrix in a two-hop multiple-input multiple-output relay network. The goal is to find a pair of matrices in order to minimize the power consumption and at the same time meet pre-selected quality of service...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Springer
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/35605 |
| _version_ | 1848754541374210048 |
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| author | Mohammadi, J. Gao, F. Rong, Yue Chen, W. |
| author_facet | Mohammadi, J. Gao, F. Rong, Yue Chen, W. |
| author_sort | Mohammadi, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, we consider the joint design of source precoding matrix and the relay precoding matrix in a two-hop multiple-input multiple-output relay network. The goal is to find a pair of matrices in order to minimize the power consumption and at the same time meet pre-selected quality of service constraints that are defined as the mean square error of each data stream. Using majorization theory, we simplify the matrix-valued optimization problem into a scalar-valued one. We then propose a lower bound and an upper bound of the original problem, both in convex forms. Specifically, the latter is solved by a multi-level water-filling algorithm that is much efficient than directly applying the interior point method. Numerical examples corroborate the proposed studies and also demonstrate the tightness of both bounds to the original problem. |
| first_indexed | 2025-11-14T08:42:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-35605 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:42:03Z |
| publishDate | 2013 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-356052017-09-13T15:25:36Z Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints Mohammadi, J. Gao, F. Rong, Yue Chen, W. convex optimization majorization MIMO relay networks joint precoding design quality of service In this paper, we consider the joint design of source precoding matrix and the relay precoding matrix in a two-hop multiple-input multiple-output relay network. The goal is to find a pair of matrices in order to minimize the power consumption and at the same time meet pre-selected quality of service constraints that are defined as the mean square error of each data stream. Using majorization theory, we simplify the matrix-valued optimization problem into a scalar-valued one. We then propose a lower bound and an upper bound of the original problem, both in convex forms. Specifically, the latter is solved by a multi-level water-filling algorithm that is much efficient than directly applying the interior point method. Numerical examples corroborate the proposed studies and also demonstrate the tightness of both bounds to the original problem. 2013 Journal Article http://hdl.handle.net/20.500.11937/35605 10.1186/1687-1499-2013-108 Springer fulltext |
| spellingShingle | convex optimization majorization MIMO relay networks joint precoding design quality of service Mohammadi, J. Gao, F. Rong, Yue Chen, W. Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints |
| title | Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints |
| title_full | Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints |
| title_fullStr | Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints |
| title_full_unstemmed | Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints |
| title_short | Joint source and relay design for two-hop amplify-and-forward relay networks with QoS constraints |
| title_sort | joint source and relay design for two-hop amplify-and-forward relay networks with qos constraints |
| topic | convex optimization majorization MIMO relay networks joint precoding design quality of service |
| url | http://hdl.handle.net/20.500.11937/35605 |