DCT precoded SLM technique for PAPR reduction in OFDM systems

Author

Baig, Imran ; Jeoti, Varun

Author_Institution

Electr. & Electron. Eng. Dept., Univ. Teknol. PETRONAS, Bandar Seri Iskandar, Malaysia

fYear

2010

fDate

15-17 June 2010

Firstpage

1

Lastpage

6

Abstract

High Peak to Average Power Ratio (PAPR) is still a most important challenge in Orthogonal Frequency Division Multiplexing (OFDM) system. In this paper, we propose a Discrete Cosine Transform (DCT) precoding based SLM technique for PAPR reduction in OFDM systems. This technique is based on precoding the constellation symbols with DCT precoder after the multiplication of phase rotation factor and before the Inverse Fast Fourier Transform (IFFT) in SLM-OFDM System. Simulation results show that our proposed technique can reduce the PAPR to about 5.5dB for N=64 and V=16 at clipping probability of 10^-3.

Keywords

OFDM modulation; discrete cosine transforms; fast Fourier transforms; precoding; clipping probability; constellation symbols; discrete cosine transform precoding; inverse fast Fourier transform; orthogonal frequency division multiplexing systems; peak-to-average-power ratio; selected mapping; Baseband; Discrete cosine transforms; Equations; Mathematical model; Partial transmit sequences; Peak to average power ratio; DCT Precoder; OFDM; PAPR; SLM;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent and Advanced Systems (ICIAS), 2010 International Conference on

Conference_Location

Kuala Lumpur, Malaysia

Print_ISBN

978-1-4244-6623-8

Type

conf

DOI

10.1109/ICIAS.2010.5716107

Filename

5716107