| 认知中继网络中的OFDMA资源分配算法 |
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| 引用本文： | 罗荣华,杨震.认知中继网络中的OFDMA资源分配算法[J].南京邮电大学学报(自然科学版),2011,31(4):1-5,10. |
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| 作者姓名： | 罗荣华 杨震 |
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| 作者单位： | 南京邮电大学信号处理与传输研究院,江苏南京,210003 |
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| 基金项目： | 国家高技术研究发展计划(863计划)(2009AA01Z241); 国家自然科学基金(60971129)资助项目 |
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| 摘 要： | 基于下垫式的认知无线电场景,针对基于放大转发协作中继的多用户正交频分多址接入认知网络,讨论了在干扰温度约束条件下,使认知用户总传输速率得到最大化的资源分配问题,提出了一种最优的功率分配算法和次优的等功率分配算法.将这两种功率分配算法分别与传统的相等子信道预分配方案和文中采用的最优子信道预分配方案相结合,仿真结果表明,所...
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| 关 键 词： | 认知无线电 放大转发 正交频分多址 资源分配 |
OFDMA-based Resource Allocation Algorithm for Cognitive Relay Networks |
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| LUO Rong-hua,YANG Zhen.OFDMA-based Resource Allocation Algorithm for Cognitive Relay Networks[J].Journal of Nanjing University of Posts and Telecommunications,2011,31(4):1-5,10. |
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| Authors: | LUO Rong-hua YANG Zhen |
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| Institution: | LUO Rong-hua,YANG Zhen(Institute of Signal Processing and Transmission,Nanjing University of Posts and Telecommunications,Nanjing 210003,China) |
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| Abstract: | In the underlay cognitive radio scenario,considering Amplified and Forward cooperative relay multiuser OFDMA cognitive networks,the resource allocation problem is discussed for the purpose of maximizing the overall data rate for all secondary users under the constraints of interference temperature.An optimal power allocation algorithm and suboptimal equal power allocation algorithm are proposed.They are combined with the traditional equal subchannels' pre-allocation scheme and the author proposed optimal su... |
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| Keywords: | cognitive radio amplified and forward OFDMA resource allocation |
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