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计算机工程 ›› 2010, Vol. 36 ›› Issue (22): 106-107.doi: 10.3969/j.issn.1000-3428.2010.22.037

• 网络与通信 • 上一篇    下一篇

Nakagami信道中MT-MFSK信号性能分析

留黎钦1，王保云2，张 荔1   

  1. (1. 莆田学院电子信息工程系，福建 莆田 351100；2. 南京邮电大学自动化学院，南京 210003)
  • 出版日期:2010-11-20 发布日期:2010-11-18
  • 作者简介:留黎钦(1982－)，女，硕士研究生，主研方向：智能信号处理；王保云，教授、博士生导师；张 荔，硕士研究生

Performance Analysis of MT-MFSK Signalsin Nakagami Channels

LIU Li-qin1, WANG Bao-yun2, ZHANG Li1   

  1. (1. Department of Electrical Engineering, Putian University, Putian 351100, China;2. College of Automation, Nanjing University of Posts and Communications, Nanjing 210003, China)
  • Online:2010-11-20 Published:2010-11-18

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摘要： 研究多音频MFSK信号在相关Nakagami衰落环境下的性能，通过信道协方差矩阵的Cholesky 分解将相关随机变量转换为独立随机变量的加权和，推导出输出信噪比的近似概率密度函数以及条件错误概率和平均字符错误概率联合边界表达式。通过Matlab仿真，证实推导出的平均字符错误概率联合边界的有效性，其性能优于MFSK系统。

关键词: Nakagami信道, 分集技术, 多音频MFSK信号

Abstract: This paper researches the performance of MT-MFSK signals in correlated Nakagami fading channels which include the following items. The correlated random variables is transformed into the weighted sums of independent variables using the Cholesky decomposition of the covariance matrix of the channels. The approximate probability density function of SNR, the approximate conditional error probability and the average union bound on the probability of symbol error is derived. Results of Matlab experiment show that the proposed average probability of symbol error is efficiency, the performance of the MT-MFSK system is better than the conventional MFSK system in terms of power and bandwidth efficiency.

Key words: Nakagami channel, diversity technology, Multiple Tone MFSK(MT-MFSK) signals

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