ZCT Precoding Based SLM Technique for PAPR Reduction

L. T. Zhan; H. Husin | W. A. F. W. Othman | Syed Sahal Nazli Alhady; A. A. A. Wahab

Title:
ZCT Precoding Based SLM Technique for PAPR Reduction

Authors:
A. A. A. Wahab | L. T. Zhan | H. Husin | W. A. F. W. Othman | Syed Sahal Nazli Alhady
DOI:
https://doi.org/10.31142/ijtsrd18572

Cite This Article :

A. A. A. Wahab | L. T. Zhan | H. Husin | W. A. F. W. Othman | Syed Sahal Nazli Alhady "ZCT Precoding Based SLM Technique for PAPR Reduction" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6, October 2018, pp.596-602, URL: https://www.ijtsrd.com/papers/ijtsrd18572.pdf

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Abstract :
High Peak to Average Power Ratio (PAPR) is the major drawback of Orthogonal Frequency Division Multiplexing (OFDM) system. In this paper, we propose Zadoff-Chu matrix Transform (ZCT) precoding Selected Mapping (SLM) based OFDM (SLM-OFDM) system for PAPR reduction. This technique is based on precoding the constellation symbols with ZCT precoder matrix (row-wise) after the multiplication of phase rotation factor and before the Inverse Fast Fourier Transform (IFFT) in the SLM based OFDM (SLM-OFDM) Systems. At the clipping rate of 10-3, simulation results show that our proposed system can reduce the PAPR up to 6.8 dB with N=64 or 256 (System subcarriers) and V=16 (Dissimilar phase sequences) for 4QAM modulation. ZCT based SLM-OFDM system can avoid signal degradation in performance when passes through a nonlinear High-Power-Amplifier (HPA).

Keywords :
Peak to Average Power Ratio (PAPR), Orthogonal Frequency Division Multiplexing (OFDM), Zadoff-Chu matrix Transform (ZCT), Selected Mapping (SLM), SLM based OFDM (SLM-OFDM)

Publication Details:

Unique Identification Number : IJTSRD18572

Published In : Volume-2 | Issue-6, October 2018

Page Number(s) : 596-602

Publisher Name : IJTSRD | www.ijtsrd.com | E-ISSN 2456-6470

Copyright © 2019 by author(s) and International Journal of Trend in Scientific Research and Development Journal. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (http://creativecommons.org/licenses/by/4.0)

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