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首页> 外文学位 >Performance analysis of wireless communication systems in multipath fading environments with correlated shadowing and co-channel interference.
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Performance analysis of wireless communication systems in multipath fading environments with correlated shadowing and co-channel interference.

机译：多路径衰落环境中具有相关阴影和同信道干扰的无线通信系统的性能分析。

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摘要

The performance aspects of conventional cellular (FDMA/TDMA) and CDMA systems with micro- and macroscopic diversity reception are investigated in a severe mobile communication environment which is characterized by path loss, correlated lognormal shadowing, multipath fading, background noise and interference. Under a co-channel interference-limited assumption, an exact analytical expression for the co-channel interference (CCI) probability is presented for a macroscopic diversity system with an arbitrary number of correlated macroscopic branches. For noise-limited systems, the average bit-error-rate (BER) and outage probability performances of a narrowband mobile communication system with micro- and macrodiversity reception are evaluated. In the relevant analysis, both Nakagami and Rician fading channels are considered. When both co-channel interference and noise coexists, the results for a Nakagami fading channel show that diversity reception can be used to reduce the effects of interference while combating fading and shadowing.; Micro- and macroscopic diversities are also applied to a multicell DS-CDMA system. In a conventional cellular system with macroscopic diversity, the mobile user is usually connected to the closest base station. However, a base-station selection scheme based on a least attenuation criterion is shown to provide a significant performance improvement over the conventional system. In this case, the system performance is examined in terms of BER and outage probability, while accounting for the effects of path loss, correlated shadowing, multipath fading, multiple access interference, and imperfect power control.
机译：在具有路径损耗，相关对数正态阴影，多径衰落，背景噪声和干扰等特征的恶劣移动通信环境中，研究了具有微观和宏观分集接收功能的常规蜂窝电话（FDMA / TDMA）和CDMA系统的性能方面。在同信道干扰受限的假设下，针对具有任意数量的相关宏观分支的宏观分集系统，给出了同信道干扰（CCI）概率的精确解析表达式。对于噪声受限的系统，评估具有微分集和宏分集接收的窄带移动通信系统的平均误码率（BER）和中断概率性能。在相关分析中，考虑了Nakagami和Rician衰落信道。当共信道干扰和噪声都同时存在时，Nakagami衰落信道的结果表明，在对抗衰落和阴影的同时，可以使用分集接收来减少干扰的影响。微观和宏观多样性也被应用于多小区DS-CDMA系统。在具有宏观分集的常规蜂窝系统中，移动用户通常连接到最近的基站。但是，示出了基于最小衰减标准的基站选择方案，与传统系统相比，它提供了显着的性能改进。在这种情况下，将根据BER和中断概率检查系统性能，同时考虑路径损耗，相关的阴影，多径衰落，多址干扰和不完善的功率控制的影响。

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  • 作者

    Zhang, Jingjun.;

  • 作者单位

    Florida Atlantic University.;

  • 授予单位 Florida Atlantic University.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 1999
  • 页码 156 p.
  • 总页数 156
  • 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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