Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation
We study the theoretical performance of two full-duplex multiple-input multiple-output (MIMO) radio systems: a full-duplex bi-directional communication system and a full-duplex relay system. We focus on the effect of a (digitally manageable) residual self-interference due to imperfect channel estima...
| Main Authors: | , , |
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| Format: | Journal Article |
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I E E E
2014
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| Online Access: | http://purl.org/au-research/grants/arc/DP140102131 http://hdl.handle.net/20.500.11937/17749 |
| _version_ | 1848749547095851008 |
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| author | Cirik, A. Rong, Yue Hua, Y. |
| author_facet | Cirik, A. Rong, Yue Hua, Y. |
| author_sort | Cirik, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We study the theoretical performance of two full-duplex multiple-input multiple-output (MIMO) radio systems: a full-duplex bi-directional communication system and a full-duplex relay system. We focus on the effect of a (digitally manageable) residual self-interference due to imperfect channel estimation (with independent and identically distributed (i.i.d.) Gaussian channel estimation error) and transmitter noise. We assume that the instantaneous channel state information (CSI) is not available the transmitters. To maximize the system ergodic mutual information, which is a non-convex function of power allocation vectors at the nodes, a gradient projection algorithm is developed to optimize the power allocation vectors. This algorithm exploits both spatial and temporal freedoms of the source covariance matrices of the MIMO links between transmitters and receivers to achieve higher sum ergodic mutual information. It is observed through simulations that the full-duplex mode is optimal when the nominal self-interference is low, and the half-duplex mode is optimal when the nominal self-interference is high. In addition to an exact closed-form ergodic mutual information expression, we introduce a much simpler asymptotic closed-form ergodic mutual information expression, which in turn simplifies the computation of the power allocation vectors. |
| first_indexed | 2025-11-14T07:22:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-17749 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:22:40Z |
| publishDate | 2014 |
| publisher | I E E E |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-177492022-10-12T03:14:15Z Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation Cirik, A. Rong, Yue Hua, Y. fast fading channels Full-duplex MIMO radio full-duplex relays bi-directional communication We study the theoretical performance of two full-duplex multiple-input multiple-output (MIMO) radio systems: a full-duplex bi-directional communication system and a full-duplex relay system. We focus on the effect of a (digitally manageable) residual self-interference due to imperfect channel estimation (with independent and identically distributed (i.i.d.) Gaussian channel estimation error) and transmitter noise. We assume that the instantaneous channel state information (CSI) is not available the transmitters. To maximize the system ergodic mutual information, which is a non-convex function of power allocation vectors at the nodes, a gradient projection algorithm is developed to optimize the power allocation vectors. This algorithm exploits both spatial and temporal freedoms of the source covariance matrices of the MIMO links between transmitters and receivers to achieve higher sum ergodic mutual information. It is observed through simulations that the full-duplex mode is optimal when the nominal self-interference is low, and the half-duplex mode is optimal when the nominal self-interference is high. In addition to an exact closed-form ergodic mutual information expression, we introduce a much simpler asymptotic closed-form ergodic mutual information expression, which in turn simplifies the computation of the power allocation vectors. 2014 Journal Article http://hdl.handle.net/20.500.11937/17749 10.1109/TSP.2014.2330806 http://purl.org/au-research/grants/arc/DP140102131 I E E E fulltext |
| spellingShingle | fast fading channels Full-duplex MIMO radio full-duplex relays bi-directional communication Cirik, A. Rong, Yue Hua, Y. Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation |
| title | Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation |
| title_full | Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation |
| title_fullStr | Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation |
| title_full_unstemmed | Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation |
| title_short | Achievable rates of full-duplex MIMO radios in fast fading channels with imperfect channel estimation |
| title_sort | achievable rates of full-duplex mimo radios in fast fading channels with imperfect channel estimation |
| topic | fast fading channels Full-duplex MIMO radio full-duplex relays bi-directional communication |
| url | http://purl.org/au-research/grants/arc/DP140102131 http://hdl.handle.net/20.500.11937/17749 |