Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system
In communication scenario with multiple cognitive radio (CR) multi-input multi-output (MIMO) users,signal processing algorithm was designed based on interference alignment (IA) such that transmissions of cognitive and authorized signal were carried out in mutual orthogonal sub-spaces.Conflict-free u...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2014-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.01.019/ |
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| _version_ | 1841539765849030656 |
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| author | Zhao LI Jian-dong LI Qin LIU Biao SHEN |
| author_facet | Zhao LI Jian-dong LI Qin LIU Biao SHEN |
| author_sort | Zhao LI |
| collection | DOAJ |
| description | In communication scenario with multiple cognitive radio (CR) multi-input multi-output (MIMO) users,signal processing algorithm was designed based on interference alignment (IA) such that transmissions of cognitive and authorized signal were carried out in mutual orthogonal sub-spaces.Conflict-free utilization of spare spatial channel(s) authorized by primary system was achieved by cognitive user.Moreover,the difference of spatial transmission performance originating from various channel matrices was exploited to implement appropriate user scheduling.Simulation results show that the proposed method can utilize spare spatial channel resource effectively and obtain multiuser diversity gain.On the premise that authorized service is protected from disturbing,transmission rate of cognitive user is improved. |
| format | Article |
| id | doaj-art-cf4a3b26a4fb4a71b8fcbd34cb0cd16f |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2014-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-cf4a3b26a4fb4a71b8fcbd34cb0cd16f2025-01-14T06:42:34ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2014-01-013516717259679090Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO systemZhao LIJian-dong LIQin LIUBiao SHENIn communication scenario with multiple cognitive radio (CR) multi-input multi-output (MIMO) users,signal processing algorithm was designed based on interference alignment (IA) such that transmissions of cognitive and authorized signal were carried out in mutual orthogonal sub-spaces.Conflict-free utilization of spare spatial channel(s) authorized by primary system was achieved by cognitive user.Moreover,the difference of spatial transmission performance originating from various channel matrices was exploited to implement appropriate user scheduling.Simulation results show that the proposed method can utilize spare spatial channel resource effectively and obtain multiuser diversity gain.On the premise that authorized service is protected from disturbing,transmission rate of cognitive user is improved.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.01.019/interference alignmentcognitive radioMIMO systemmultiuser |
| spellingShingle | Zhao LI Jian-dong LI Qin LIU Biao SHEN Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system Tongxin xuebao interference alignment cognitive radio MIMO system multiuser |
| title | Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system |
| title_full | Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system |
| title_fullStr | Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system |
| title_full_unstemmed | Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system |
| title_short | Interference alignment based spectrum sharing and user scheduling for cognitive radio MIMO system |
| title_sort | interference alignment based spectrum sharing and user scheduling for cognitive radio mimo system |
| topic | interference alignment cognitive radio MIMO system multiuser |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.01.019/ |
| work_keys_str_mv | AT zhaoli interferencealignmentbasedspectrumsharinganduserschedulingforcognitiveradiomimosystem AT jiandongli interferencealignmentbasedspectrumsharinganduserschedulingforcognitiveradiomimosystem AT qinliu interferencealignmentbasedspectrumsharinganduserschedulingforcognitiveradiomimosystem AT biaoshen interferencealignmentbasedspectrumsharinganduserschedulingforcognitiveradiomimosystem |