ERAM算法在瑞利衰落信道下的性能分析

doi:10.3969/j.issn.1000-3428.2013.09.030

计算机工程

ERAM算法在瑞利衰落信道下的性能分析

罗玉笛^1,2，王玫^1,2，符杰林^1,2

(1. 桂林电子科技大学信息与通信学院，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)

收稿日期:2012-08-13 出版日期:2013-09-15 发布日期:2013-09-13
作者简介:罗玉笛(1987－)，女，硕士研究生，主研方向：宽带无线通信；王玫，教授、博士生导师；符杰林(通讯作者)，讲师、博士研究生
基金资助:
国家自然科学基金资助项目(61071088, 61172054)；通信网信息传输与分发技术重点实验室开放课题基金资助项目(ITD- U11004)

Performance Analysis of ERAM Algorithm in Rayleigh Fading Channel

LUO Yu-di ^1,2, WANG Mei ^1,2, FU Jie-lin ^1,2

(1. School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China; 2. Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, Shijiazhuang 050081, China)

Received:2012-08-13 Online:2013-09-15 Published:2013-09-13

摘要/Abstract

摘要： 针对RAM算法在瑞利衰落信道下误码率较高的问题，提出一种改进算法ERAM。该算法根据信道变化调整信噪比预测机制，依照误码率性能要求设置吞吐量表格初值，并使用ACK帧携带下一帧传输速率的信息，从而较快地响应信道的变化。在瑞利平衰落信道模型下的仿真结果表明，与RAM算法相比，该算法不仅能保持较好的吞吐量性能，而且能够有效降低误码率。

关键词: 瑞利衰落信道, 速率自适应算法, 吞吐量, 误码率, 信噪比, ACK帧

Abstract: For the poor Bit Error Ratio(BER) performances of Rate Adaptation in Mobile(RAM) environments algorithm in the Rayleigh fading channel, based on RAM, an improved rate adaptive algorithm, named Enhanced RAM(ERAM), is proposed. It adjusts Signal to Noise Ratio(SNR) forecasting mechanism according to the channel change, sets the throughput table initial value according to BER requirements, and uses the ACK frame to carry the next frame transmission rate, so the algorithm reacts to channel variations quickly. Simulation results show that the improved algorithm not only keep better throughput performance, but also can effectively improve the bit error rate performance in the rayleigh flat fading channel model.

Key words: Rayleigh fading channel, rate adaptive algorithm, throughput, Bit Error Ratio(BER), Signal to Noise Ratio(SNR), ACK frame

中图分类号:

TP391

罗玉笛，王玫，符杰林. ERAM算法在瑞利衰落信道下的性能分析[J]. 计算机工程, doi: 10.3969/j.issn.1000-3428.2013.09.030.

LUO Yu-di, WANG Mei, FU Jie-lin. Performance Analysis of ERAM Algorithm in Rayleigh Fading Channel[J]. Computer Engineering, doi: 10.3969/j.issn.1000-3428.2013.09.030.

http://www.ecice06.com/CN/Y2013/V39/I9/142

参考文献

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