在可靠无线介质中利用多用户分集提高中川多径衰落信道的性能

K. Jayanthi, V. Arunachalam, C. Vasanthanayaki
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引用次数: 0

摘要

当今社会对快速、可靠的无线通信提出了更高的要求,由于频谱效率更高的传输方案可以缓解带宽资源的压力,无线频谱变得越来越拥挤。在该系统中,我们提出了一个新的框架来生成相关MIMO中上多径衰落(NMF)信道,该信道的每个子信道具有任意且不同的m。与Rayleigh和Rice模型相比,Nakagami模型的一个优点是概率密度函数(PDF)和接收CSNR(信道信噪比)的相对表达式。分集是由发射信号在NMF信道中通过反射、衍射和散射进行去极化而产生的。在本研究中,最大比组合(MRC)分集被用于产生具有可接受信噪比和最佳统计减少多径衰落效应的输出。该系统将NMF和MRC分集方法相结合,开发了一种简单高效的新生成方法,在无线媒体中具有良好的精度,可以在Matlab中模拟过程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Raising the Performance of Nakagami Multipath Fading channel with multiuser diversity in reliable wireless medium
Today's society demands fast and reliable wireless communication, and the wireless spectrum grows more and more crowded as a consequence of more spectrally efficient transmission schemes can relieve the pressure on the bandwidth resources. In this proposed system, we propose a new framework for generating the correlated MIMO Nakagami Multipath Fading (NMF) channels which possess arbitrary and different m for each sub channel. An advantage of the Nakagami over the Rayleigh and Rice model is the relatively an expression for the Probability Density Function (PDF) and received CSNR (channel signal-to-noise ratio). The diversity is produced by the depolarization of the transmitted signal by reflection, diffraction, and scattering in the channel of NMF. In this proposed work, Maximal Ratio combining (MRC) diversity is used to producing an output with an acceptable SNR and best statistical reducing of multipath fading effect. The result of this proposed system, NMF and MRC diversity methods are combined to, a novel simple and high efficient generation method is developed to scrutinize an excellent accuracy in wireless media, for simulating processes in Matlab.
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