期刊名称：International Journal of Electronics Communication and Computer Engineering
印刷版ISSN：2249-071X
电子版ISSN：2278-4209
出版年度：2012
卷号：3
期号：1
页码：190-194
出版社：IJECCE
摘要：In this paper we propose an algorithm for PAPR reduction in OFDM systems, based on a Partial Transmit Sequence Technique. In this present work an introduction to multi-carrier modulation emphasizing OFDM (Orthogonal Frequency Division Multiplexing) is given followed by mathematical and qualitative description of OFDM. This paper work presents an overview of the most popular OFDM PAPR-reduction techniques demonstrating that Partial Transmit Sequences (PTS) Technique is a particularly promising reduction technique. It achieves considerable PAPR reduction without distortion, but the high computational complexity of multiple Fourier transforms is a problem in practical systems. This new technique significantly decreases the computational complexity while providing comparable PAPR reduction to ordinary PTS (OPTS), even with a small number of stages after PTS partitioning. All carriers are orthogonal to each other, which means when one particular subcarrier is at its peak other are at zero. It also requires less increase in SNR for the same BER compared to other methods. Numerical results are presented which confirm the PAPR improvements
关键词：OFDM Orthogonal Frequency Division Multiplexing; PAPR Peak to Average Power Ratio; BER Bit Error Rate; PTS Partial Transmit Sequence
