Link level performance of Single Carrier Frequency Division Multiple Access (SC-FDMA) for Land Mobile Satellite (LMS) channel

2012 IEEE International Conference on Computational Intelligence and Computing Research Pub Date : 2012-12-01 DOI:10.1109/ICCIC.2012.6510193

J. Gangane, M. Aguayo-Torres, J. Sánchez-Sánchez, S. M. Kate

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引用次数: 2

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) advantages, such as flexible user and rate allocation or easy intersymbol interference compensation, explain its expansion. OFDM has shown resistance to multipath fading. However, OFDM suffers from high Peak to Average Power Ratio (PAPR) which may be particularly troublesome in certain environment such as satellite communications. Single Carrier Orthogonal Frequency Division Multiple Access (SC-FDMA) has become an alternative to OFDM due to its low PAPR. Described as a precoded version of OFDM, its performance is worse than that of OFDM for Rayleigh channels. In this work, the SC-FDMA performance over a simplified model for Land Mobile Satellite (LMS) channels is investigated for different Rice factor K, average delays, and allocated subcarriers. It is shown that, besides its lower PAPR, SC-FDMA outperforms OFDM due to the existence of a Line Of Sight (LOS) able to increase SC-FDMA resistance to fading further than that of OFDM.

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陆地移动卫星信道单载波频分多址(SC-FDMA)链路级性能研究

正交频分复用(OFDM)的优点，如灵活的用户和速率分配或容易的码间干扰补偿，解释了它的发展。OFDM已经显示出对多径衰落的抵抗力。然而，OFDM具有较高的峰值平均功率比(PAPR)，这在卫星通信等特定环境中尤为麻烦。单载波正交频分多址(SC-FDMA)由于其较低的PAPR而成为OFDM的替代方案。作为OFDM的预编码版本，它在瑞利信道下的性能比OFDM差。在这项工作中，SC-FDMA在陆地移动卫星(LMS)信道的简化模型上的性能研究了不同的Rice因子K、平均延迟和分配的子载波。研究表明，除了其较低的PAPR外，由于视线(LOS)的存在，SC-FDMA优于OFDM，能够比OFDM进一步增加SC-FDMA对衰落的抵抗力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 IEEE International Conference on Computational Intelligence and Computing Research

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