Robust interference alignment algorithm for cognitive MIMO interference network
A robust interference alignment algorithm was proposed for underlay cognitive MIMO interference network with imperfect channel-state information (CSI).Firstly,imperfect CSI was characterized by Euclidean ball-shaped uncer-tainty,based on which the optimization model of transmitting precoding and rec...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2016-03-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016063/ |
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| _version_ | 1841539574783803392 |
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| author | Shi-lei ZHU You ZHOU Xiu-kun REN Han-ying HU |
| author_facet | Shi-lei ZHU You ZHOU Xiu-kun REN Han-ying HU |
| author_sort | Shi-lei ZHU |
| collection | DOAJ |
| description | A robust interference alignment algorithm was proposed for underlay cognitive MIMO interference network with imperfect channel-state information (CSI).Firstly,imperfect CSI was characterized by Euclidean ball-shaped uncer-tainty,based on which the optimization model of transmitting precoding and receiving interference subspace matrix was constructed with aimed of minimizing interference leak Then,primary users' interference temperature constraint un-der the worst-case condition was derived according to the matrix norm inequality.Finally,alternate iteration expressions of transceiver matrixes were obtained exploiting Lagrange partial dual-decomposition theory and sub-gradient update method.Moreover,the proposed algorithm's application condition and degrees of freedom range were theoretically ana-lyzed.Simulation results show that the proposed algor m is robust and its secondary users' network performance out-performs existing algorithms'. |
| format | Article |
| id | doaj-art-53507e6374d44f90804c5f59647ae0f9 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2016-03-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-53507e6374d44f90804c5f59647ae0f92025-01-14T06:55:06ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2016-03-013715716459700079Robust interference alignment algorithm for cognitive MIMO interference networkShi-lei ZHUYou ZHOUXiu-kun RENHan-ying HUA robust interference alignment algorithm was proposed for underlay cognitive MIMO interference network with imperfect channel-state information (CSI).Firstly,imperfect CSI was characterized by Euclidean ball-shaped uncer-tainty,based on which the optimization model of transmitting precoding and receiving interference subspace matrix was constructed with aimed of minimizing interference leak Then,primary users' interference temperature constraint un-der the worst-case condition was derived according to the matrix norm inequality.Finally,alternate iteration expressions of transceiver matrixes were obtained exploiting Lagrange partial dual-decomposition theory and sub-gradient update method.Moreover,the proposed algorithm's application condition and degrees of freedom range were theoretically ana-lyzed.Simulation results show that the proposed algor m is robust and its secondary users' network performance out-performs existing algorithms'.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016063/cognitive MIMOunderlayinterference alignmentrobust |
| spellingShingle | Shi-lei ZHU You ZHOU Xiu-kun REN Han-ying HU Robust interference alignment algorithm for cognitive MIMO interference network Tongxin xuebao cognitive MIMO underlay interference alignment robust |
| title | Robust interference alignment algorithm for cognitive MIMO interference network |
| title_full | Robust interference alignment algorithm for cognitive MIMO interference network |
| title_fullStr | Robust interference alignment algorithm for cognitive MIMO interference network |
| title_full_unstemmed | Robust interference alignment algorithm for cognitive MIMO interference network |
| title_short | Robust interference alignment algorithm for cognitive MIMO interference network |
| title_sort | robust interference alignment algorithm for cognitive mimo interference network |
| topic | cognitive MIMO underlay interference alignment robust |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016063/ |
| work_keys_str_mv | AT shileizhu robustinterferencealignmentalgorithmforcognitivemimointerferencenetwork AT youzhou robustinterferencealignmentalgorithmforcognitivemimointerferencenetwork AT xiukunren robustinterferencealignmentalgorithmforcognitivemimointerferencenetwork AT hanyinghu robustinterferencealignmentalgorithmforcognitivemimointerferencenetwork |