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Performance of quadrature amplitude modulation in Nakagami fading channels with diversity.

机译:Nakagami衰落信道中正交幅度调制的性能。

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摘要

In mobile communication systems, multipath fading seriously degrades the performance. However, if the multipath medium is well characterized, transmitter and receiver can be designed to match the channel and to reduce the effect of these disturbances. Nakagami fading channel which is considered to be a good model for this channel is presented. The performance of M-ary Quadrature Amplitude Modulation (M-QAM) scheme which has high spectral efficiency is analyzed and the use of different diversity schemes to mitigate the effects of fading is investigated.; The goal of this thesis is to provide closed formulas for the performance of M-QAM without and with different diversity combining schemes over Nakagami fading channels which can be used by system designers and engineers. Computer simulations are performed to confirm the theoretical formulas derived and also to study the effects of changing some parameters on the performance of the system.
机译:在移动通信系统中,多径衰落严重降低了性能。但是,如果多径介质具有良好的特性,则可以将发送器和接收器设计为匹配信道并减少这些干扰的影响。提出了被认为是该信道很好模型的中上衰落信道。分析了具有高频谱效率的M进制正交幅度调制(M-QAM)方案的性能,并研究了使用不同的分集方案来减轻衰落的影响。本文的目的是为系统设计者和工程师可以使用的中型衰落信道上不存在和具有不同分集组合方案的M-QAM性能提供一个封闭的公式。进行计算机仿真以确认得出的理论公式,并研究更改某些参数对系统性能的影响。

著录项

  • 作者

    Al-Shalan, Furaih Fayiz.;

  • 作者单位

    King Fahd University of Petroleum and Minerals (Saudi Arabia).;

  • 授予单位 King Fahd University of Petroleum and Minerals (Saudi Arabia).;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2000
  • 页码 108 p.
  • 总页数 108
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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