Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive Radio
In order to solve the multi-users’ resource allocation problem of OFDM systems under the underlay spectrum sharing mode conveniently and efficiently，a fair resource allocation algorithm with low complexity was proposed.The fair subcarrier allocation algorithm was applied to allocate subcarrier for c...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2013-04-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.3969/j.issn.1000-0801.2013.04.017/ |
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| _version_ | 1841529190565806080 |
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| author | Xinbin Li Aiwu Shi Xingfang Song |
| author_facet | Xinbin Li Aiwu Shi Xingfang Song |
| author_sort | Xinbin Li |
| collection | DOAJ |
| description | In order to solve the multi-users’ resource allocation problem of OFDM systems under the underlay spectrum sharing mode conveniently and efficiently，a fair resource allocation algorithm with low complexity was proposed.The fair subcarrier allocation algorithm was applied to allocate subcarrier for cognitive users to turn the complex problem of resource allocations into a simple problem of a single user power allocation.Also a linear capped water-filling algorithm with low complexity was used to solve the subcarrier power allocation problem.Simulation results show that，compared with other methods，the proposed method has very good effectiveness and superiority in application to the TV frequency’s OFDM system. |
| format | Article |
| id | doaj-art-979fb7d8146945ba9a593604f6565d4f |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2013-04-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-979fb7d8146945ba9a593604f6565d4f2025-01-15T03:22:56ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012013-04-0129838859629354Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive RadioXinbin LiAiwu ShiXingfang SongIn order to solve the multi-users’ resource allocation problem of OFDM systems under the underlay spectrum sharing mode conveniently and efficiently，a fair resource allocation algorithm with low complexity was proposed.The fair subcarrier allocation algorithm was applied to allocate subcarrier for cognitive users to turn the complex problem of resource allocations into a simple problem of a single user power allocation.Also a linear capped water-filling algorithm with low complexity was used to solve the subcarrier power allocation problem.Simulation results show that，compared with other methods，the proposed method has very good effectiveness and superiority in application to the TV frequency’s OFDM system.http://www.telecomsci.com/zh/article/doi/10.3969/j.issn.1000-0801.2013.04.017/Underlay spectrum sharingOFDM，resource allocation for multi-userssubcarrier allocationlinear capped water-filling algorithm |
| spellingShingle | Xinbin Li Aiwu Shi Xingfang Song Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive Radio Dianxin kexue Underlay spectrum sharing OFDM，resource allocation for multi-users subcarrier allocation linear capped water-filling algorithm |
| title | Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive Radio |
| title_full | Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive Radio |
| title_fullStr | Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive Radio |
| title_full_unstemmed | Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive Radio |
| title_short | Multi-Users Resource Allocation Problem in OFDM Systems Under the Underlay Spectrum Sharing Mode for Cognitive Radio |
| title_sort | multi users resource allocation problem in ofdm systems under the underlay spectrum sharing mode for cognitive radio |
| topic | Underlay spectrum sharing OFDM，resource allocation for multi-users subcarrier allocation linear capped water-filling algorithm |
| url | http://www.telecomsci.com/zh/article/doi/10.3969/j.issn.1000-0801.2013.04.017/ |
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