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标题：Simulation and Analysis of OFDM and SC-FDMA with STBC using Different Modulation Techniques
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作者：Navjot Kaur ; Neetu Gupta
期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2015
卷号：4
期号：11
页码：4184-4189
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Rapidly growing demand of multimedia services and the growth of internet services lead to requirement of high speed communication in current 4G and other wireless communication systems. Orthogonal Frequency Division Multiplexing (OFDM) and Single Carrier Frequency Division Multiple Access (SC-FDMA) are a major part of future mobile communication standards like Long Term Evolution (LTE), LTE-Advanced and Ultra Mobile Broadband (UMB). OFDM is a well known technique for the broadband wireless communication system which is utilized for achieving high spectral efficiency in communication systems [1].The undesirable high PAPR of OFDM led 3GPP to choose a different modulation format for the LTE uplink. OFDM is used in the WiMAX uplink but LTE continued to use SC-FDMA.SC-FDMA is a new hybrid modulation scheme that cleverly combines the low PAPR of single-carrier systems with the multipath resistance and flexible subcarrier frequency allocation offered by OFDM [2]. In this paper, we have explored both the multiple access techniques i.e. OFDM and SC-FDMA and implemented it in GUI MATLAB 7.10.0 alongwith the coding algorithm of space-time block codes (STBC) by using different modulation techniques i.e. QPSK, QAM and PSK.
关键词：BER; OFDM; PAPR; SC-FDMA; WiMAX