| CWNs中机会协作传输策略及其差错性能分析 |
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| 引用本文： | 褚御芝,郑宝玉.CWNs中机会协作传输策略及其差错性能分析[J].系统工程与电子技术,2011,33(9):2101-2105. |
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| 作者姓名： | 褚御芝 郑宝玉 |
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| 作者单位： | 1. 南京邮电大学信号处理与传输研究院, 江苏 南京 210003;
2. 南京邮电大学宽带无线通信与传感网技术教育部重点实验室, 江苏 南京 210003 |
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| 基金项目： | 国家自然科学基金(60972039,61001077); 国家高技术研究发展计划(863计划)(2009AA01Z241); 江苏省普通高校研究生科研创新计划(CXZZ11_0389)资助课题 |
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| 摘 要： | 在主用户和感知用户共存的认知无线网(cognitive wireless networks, CWNs)中,针对如何在保证主用户有效传输的同时满足感知用户无线业务通信要求的问题,提出了一种基于频谱感知的机会协作传输策略。在瑞利衰落信道下对所提方案进行理论分析,给出了协作传输与非协作传输策略下平均误比特率的解析表达式,理论分析和仿真结果表明,相对于传统非协作传输而言,机会协作传输策略的差错性能得到明显改善。
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| 关 键 词： | 认知无线网络 机会协作传输 频谱感知 误比特率 |
Opportunistic cooperative transmission scheme and its BER performance analysis in cognitive wireless networks |
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| CHU Yu-zhi,ZHENG Bao-yu.Opportunistic cooperative transmission scheme and its BER performance analysis in cognitive wireless networks[J].System Engineering and Electronics,2011,33(9):2101-2105. |
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| Authors: | CHU Yu-zhi ZHENG Bao-yu |
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| Institution: | 1. Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
2. Key Lab of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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| Abstract: | With the increase of primary user's(PU) transmission performance,the cognitive user's(CU) performance will be decreased rapidly in cognitive wireless networks(CWNs).A new opportunistic cooperative transmission scheme based on spectrum sensing in CWNs is proposed.Then,a closed-form expression of average bit error ratio(BER) for the proposed scheme is presented over Rayleigh fading channels.Numerical simulations are conducted to compare the proposed scheme with the traditional non-cooperative transmission,sho... |
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| Keywords: | cognitive wireless network opportunistic cooperative transmission spectrum sensing bit error ratio |
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