Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relaying
An opportunistic spectrum sharing protocol based on OFDM cooperation relaying was proposed.When the primary user experiences weak channel conditions,it could not achieve its target rate.If the cognitive user could help the primary user achieve its target rate,it accessed the pectrum of the primary u...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2012-11-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2012.11.010/ |
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| _version_ | 1841539861472870400 |
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| author | Wei-dang LU Xuan-li WU Xue-jun SHA Nai-tong ZHANG |
| author_facet | Wei-dang LU Xuan-li WU Xue-jun SHA Nai-tong ZHANG |
| author_sort | Wei-dang LU |
| collection | DOAJ |
| description | An opportunistic spectrum sharing protocol based on OFDM cooperation relaying was proposed.When the primary user experiences weak channel conditions,it could not achieve its target rate.If the cognitive user could help the primary user achieve its target rate,it accessed the pectrum of the primary user in the cooperation way.In this access way,the cognitive user used a fraction of the subcarriers to amplify-and-forward the signal of the primary user,to help the primary user achieve its target rate.And uses the remained subcarriers to transmit its own signal.The resource allocation was analyzed in this cooperation way.An optimal resource allocation algorithm based on dual ethod was proposed,which maximized the rate of the cognitive user while g anteeing the primary user achieve its target rate.If the cognitive user could not help the primary user achieve its target rate,to make use the spectrum efficiently,the cognitive user accessed the spectrum of the primary user in the non-cooperation way,and uses the whole accessed spectrum to transmit its own signal.The simulation demonstrates the efficiency of the proposed spectrum sharing protocol as well as its benefit to both primary and cognitive user. |
| format | Article |
| id | doaj-art-2a90fe87fab9416981221695cef49bb7 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2012-11-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-2a90fe87fab9416981221695cef49bb72025-01-14T06:33:30ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2012-11-0133748659666705Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relayingWei-dang LUXuan-li WUXue-jun SHANai-tong ZHANGAn opportunistic spectrum sharing protocol based on OFDM cooperation relaying was proposed.When the primary user experiences weak channel conditions,it could not achieve its target rate.If the cognitive user could help the primary user achieve its target rate,it accessed the pectrum of the primary user in the cooperation way.In this access way,the cognitive user used a fraction of the subcarriers to amplify-and-forward the signal of the primary user,to help the primary user achieve its target rate.And uses the remained subcarriers to transmit its own signal.The resource allocation was analyzed in this cooperation way.An optimal resource allocation algorithm based on dual ethod was proposed,which maximized the rate of the cognitive user while g anteeing the primary user achieve its target rate.If the cognitive user could not help the primary user achieve its target rate,to make use the spectrum efficiently,the cognitive user accessed the spectrum of the primary user in the non-cooperation way,and uses the whole accessed spectrum to transmit its own signal.The simulation demonstrates the efficiency of the proposed spectrum sharing protocol as well as its benefit to both primary and cognitive user.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2012.11.010/spectrum sharingcooperative relayingOFDMsubcarrier pairingpower allocation |
| spellingShingle | Wei-dang LU Xuan-li WU Xue-jun SHA Nai-tong ZHANG Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relaying Tongxin xuebao spectrum sharing cooperative relaying OFDM subcarrier pairing power allocation |
| title | Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relaying |
| title_full | Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relaying |
| title_fullStr | Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relaying |
| title_full_unstemmed | Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relaying |
| title_short | Opportunistic spectrum sharing protocol and optimal resource allocation based on OFDM cooperation relaying |
| title_sort | opportunistic spectrum sharing protocol and optimal resource allocation based on ofdm cooperation relaying |
| topic | spectrum sharing cooperative relaying OFDM subcarrier pairing power allocation |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2012.11.010/ |
| work_keys_str_mv | AT weidanglu opportunisticspectrumsharingprotocolandoptimalresourceallocationbasedonofdmcooperationrelaying AT xuanliwu opportunisticspectrumsharingprotocolandoptimalresourceallocationbasedonofdmcooperationrelaying AT xuejunsha opportunisticspectrumsharingprotocolandoptimalresourceallocationbasedonofdmcooperationrelaying AT naitongzhang opportunisticspectrumsharingprotocolandoptimalresourceallocationbasedonofdmcooperationrelaying |