Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBF
For the coexistence and increasing interference of satellite-terrestrial network and terrestrial wireless network,a typical scenario where the geostationary earth orbit (GEO) satellite-terrestrial network and the 4G mobile communication network coexist heterogeneously was analyzed.Besides,a multi-us...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2014-10-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.10.006/ |
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| author | Yong LIAO Tao WANG Huan CHEN Xin ZHOU Yu-feng LI |
| author_facet | Yong LIAO Tao WANG Huan CHEN Xin ZHOU Yu-feng LI |
| author_sort | Yong LIAO |
| collection | DOAJ |
| description | For the coexistence and increasing interference of satellite-terrestrial network and terrestrial wireless network,a typical scenario where the geostationary earth orbit (GEO) satellite-terrestrial network and the 4G mobile communication network coexist heterogeneously was analyzed.Besides,a multi-user cognitive system model that secondary satellite terminals interfere the primary multiple input multiple output (MIMO) 4G based stations was also proposed,with whose general signal processing was deduced.Meanwhile,digital beam forming (DBF) technology in 4G based station system was adopted to minimize the cognitive interference caused by multi-antennas and multi-users.And an optimal beam weight based on fixed azimuth interference (OBW-FAI) was proposed.Weight vector was only related to the azimuth of the interferences,thus the proposed algorithm does not need real-time and repeat calculations,and had small complexity.Finally,the numerical simulation results verify that the proposed system and algorithm can effectively reduce interference between satellite-terrestrial network and terrestrial wireless network to a certain extent. |
| format | Article |
| id | doaj-art-39f2a18740144b169327559f6a6893d6 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2014-10-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-39f2a18740144b169327559f6a6893d62025-01-14T06:44:18ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2014-10-0135424959686573Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBFYong LIAOTao WANGHuan CHENXin ZHOUYu-feng LIFor the coexistence and increasing interference of satellite-terrestrial network and terrestrial wireless network,a typical scenario where the geostationary earth orbit (GEO) satellite-terrestrial network and the 4G mobile communication network coexist heterogeneously was analyzed.Besides,a multi-user cognitive system model that secondary satellite terminals interfere the primary multiple input multiple output (MIMO) 4G based stations was also proposed,with whose general signal processing was deduced.Meanwhile,digital beam forming (DBF) technology in 4G based station system was adopted to minimize the cognitive interference caused by multi-antennas and multi-users.And an optimal beam weight based on fixed azimuth interference (OBW-FAI) was proposed.Weight vector was only related to the azimuth of the interferences,thus the proposed algorithm does not need real-time and repeat calculations,and had small complexity.Finally,the numerical simulation results verify that the proposed system and algorithm can effectively reduce interference between satellite-terrestrial network and terrestrial wireless network to a certain extent.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.10.006/satellite-terrestrial heterogeneous coexistencecognitive networkmulti-user multiple input multiple outputdigital beam forminginterference mitigation |
| spellingShingle | Yong LIAO Tao WANG Huan CHEN Xin ZHOU Yu-feng LI Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBF Tongxin xuebao satellite-terrestrial heterogeneous coexistence cognitive network multi-user multiple input multiple output digital beam forming interference mitigation |
| title | Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBF |
| title_full | Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBF |
| title_fullStr | Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBF |
| title_full_unstemmed | Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBF |
| title_short | Interference mitigation for satellite-terrestrial heterogeneous coexistence cognitive MIMO system based on DBF |
| title_sort | interference mitigation for satellite terrestrial heterogeneous coexistence cognitive mimo system based on dbf |
| topic | satellite-terrestrial heterogeneous coexistence cognitive network multi-user multiple input multiple output digital beam forming interference mitigation |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.10.006/ |
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