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BER analysis of MIMO-OFDM using V-BLAST system for different modulation schemes

机译:使用V-BLAST系统对不同调制方案进行MIMO-OFDM的BER分析

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摘要

Wireless communication systems at high data rates and low power consumptions are currently in high demand. Power efficiency becomes a critical issue for technology that will be used in 3G and 4G technologies. Orthogonal frequency-division multiplexing (OFDM) is a technique using discrete multi-tone modulation with each subcarrier modulating in a conventional modulation scheme. On the other hand, Multiple- Input Multiple-Output (MIMO) systems have become the attention of wireless academic community and industry because of their promising ability to increase capacity and performance with acceptable Bit Error Rate (BER) proportionally with the increased number of antennas. In this paper, MIMO-OFDM system using Vertical Bell Lab lAyered Space Time (V-BLAST) is developed by considering Minimum Mean Square Error (MMSE) and Zero Forcing (ZF) detector mechanisms for various modulation schemes and antenna configurations. The performance parameter of MIMO-OFDM in terms of BER is determined and analysed for two different detector schemes such as MMSE and ZF with the help of MATLAB package.
机译:当前,对高数据速率和低功耗的无线通信系统提出了很高的要求。功率效率已成为将在3G和4G技术中使用的技术的关键问题。正交频分复用(OFDM)是一种使用离散多音调调制的技术,每个子载波按照常规调制方案进行调制。另一方面,多输入多输出(MIMO)系统已成为无线学术界和业界关注的问题,因为它们具有与天线数量成比例地增加容量和性能以及可接受的误码率(BER)的能力。 。在本文中,通过考虑最小均方误差(MMSE)和零强迫(ZF)检测器机制用于各种调制方案和天线配置,开发了使用垂直贝尔实验室分层时空(V-BLAST)的MIMO-OFDM系统。借助MATLAB软件包,针对MMSE和ZF这两种不同的检测器方案,确定并分析了MIMO-OFDM的BER性能参数。

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