| M-Charm速率自适应算法在瑞利平坦衰落信道的性能分析 |
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| 引用本文： | 时 帅,王 玫,符杰林.M-Charm速率自适应算法在瑞利平坦衰落信道的性能分析[J].计算机应用研究,2013,30(4):1130-1132. |
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| 作者姓名： | 时 帅 王 玫 符杰林 |
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| 作者单位： | 1. 桂林电子科技大学 通信研究所, 广西 桂林 541004 ; 2. 通信网信息传输与分发技术重点实验室, 石家庄 050081 |
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| 基金项目： | 通信网信息传输与分发技术重点实验室开放课题资助项目（ITD-U11004）; 国家自然科学基金资助项目（61071088, 61172054） |
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| 摘 要： | 针对Charm(channel-aware rate selection algorithm)算法在瑞利平坦衰落信道下误码率性能较差的问题,提出了M-Charm(modified Charm)速率自适应算法。该算法基于Charm算法,通过调整信噪比估计参数,增加差值补偿机制,以提高信道估计的准确性,进而降低了误码率。在瑞利平坦衰落信道模型下的仿真结果表明,M-Charm算法不仅保持了较好的吞吐量性能,而且大大改善了误码率性能。
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| 关 键 词： | 瑞利平坦衰落信道 速率自适应 吞吐量 误码率 |
Performance analysis of M-Charm rate adaptation algorithm inRayleigh flat fading channel |
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| SHI Shuai,WANG Mei,FU Jie-lin.Performance analysis of M-Charm rate adaptation algorithm inRayleigh flat fading channel[J].Application Research of Computers,2013,30(4):1130-1132. |
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| Authors: | SHI Shuai WANG Mei FU Jie-lin |
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| Affiliation: | 1. Communication Research Institute, Guilin University of Electronic Technology, Guilin Guangxi 541004, China; 2. Laboratory of Science & Technology on Information Transmission & Dissemination in Communication Networks, Shijiazhuang 050081, China |
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| Abstract: | Aiming at the problem of Charm having poor BER performance in Rayleigh flat fading channel, this paper put M-Charm algorithm forward based on Charm. The algorithm improved the accuracy of channel estimation to reduce BER by adjusting signal-to-noise ratio estimation parameters and adding difference compensation mechanism. Simulation result in Rayleigh flat fading channel model shows that M-Charm algorithm not only keeps good throughput performance, but also improves BER performance greatly. |
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| Keywords: | Rayleigh flat fading channel rate adaptive throughput BER |
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