| 引用本文: | 刘鑫,贾敏,向维,李秀华,谭学治.宽带协作通信认知无线电的功率分配[J].哈尔滨工业大学学报,2013,45(9):7.DOI:10.11918/j.issn.0367-6234.2013.09.002 |
| LIU Xin,JIA Min,XIANG Wei,LI Xiuhua,TAN Xuezhi.Power allocation of wideband cognitive radio based oncooperative communication[J].Journal of Harbin Institute of Technology,2013,45(9):7.DOI:10.11918/j.issn.0367-6234.2013.09.002 |
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| 宽带协作通信认知无线电的功率分配 |
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刘鑫1,2, 贾敏1, 向维3, 李秀华1, 谭学治1
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(1. 哈尔滨工业大学 通信技术研究所, 150080 哈尔滨; 2. 南京航空航天大学 航天学院, 210016 南京;3. 澳大利亚南昆士兰大学 工程和测量学院, 4350 澳洲 昆士兰)
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| 摘要: |
| 为了提高宽带认知无线电(Cognitive Radio, CR)和主用户(Primary User, PU)的传输速率,提出了CR和PU之间协作通信的方案以及CR的最优子信道功率分配方法．当检测到PU存在时,该方案允许CR使用半个帧传输数据,使用剩下的半个帧帮助PU协作传输．基于此方案提出的功率分配能够使CR在不影响PU的同时获得更大的传输速率．仿真表明:相比传统的非协作通信,提出的方案能够使CR和PU的传输速率同时获得提高． |
| 关键词: 认知无线电 协作通信 传输速率 功率分配；主用户 |
| DOI：10.11918/j.issn.0367-6234.2013.09.002 |
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| 基金项目:国家自然科学基金资助项目（61201143）,教育部春晖计划资助项目（Z2011156）,哈尔滨工业大学科研创新基金资助项目 (HIT. NSRIF. 2010091), 中国博士后科学基金资助项目 (2012M510956),黑龙江省博士后科学基金资助项目 (LBHZ11128 ). |
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| Power allocation of wideband cognitive radio based oncooperative communication |
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LIU Xin1,2, JIA Min1, XIANG Wei3, LI Xiuhua1, TAN Xuezhi1
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(1. Communication Research Centre, Harbin Institute of Technology, 150080 Harbin, China;2. College of Astronautics, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China;3. Faculty of Engineering and Surveying, University of Southern Queensland, 4350 Toowoomba, Australia)
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| Abstract: |
| In order to improve the transmission rates of cognitive radio (CR) and primary user (PU), the cooperative communication scheme between CR and PU and the optimal sub-band power allocation are proposed respectively. If the presence of the PU is detected, the scheme allows CR to use half of the frame to transmit data while using the left half to help PU with cooperative transmission. The proposed power allocation based on the scheme can make CR achieve higher rate without influencing PU. Simulation results show that compared with the conventional non-cooperative communication, the proposed scheme can make improvements on the rates of both PU and CR. |
| Key words: cognitive radio cooperative communication transmission rate power allocation primary user
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