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A New ZCT Precoding Based SLM Technique for PAPR Reduction in OFDM Systems

Jeoti , Varun (2010) A New ZCT Precoding Based SLM Technique for PAPR Reduction in OFDM Systems. In: Asia Pacific Conf. on Circuits and Systems , 6-9 December 2010, Kuala Lumpur.

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Abstract

High Peak to Average Power Ratio (PAPR) reduction is still a most important challenge in Orthogonal Frequency Division Multiplexing (OFDM) system. In this paper, we propose a novel Zadoff-Chu matrix Transform (ZCT) precoding based Selected Mapping (SLM) technique for PAPR reduction in OFDM systems. This technique is based on precoding the constellation symbols with ZCT after the multiplication of phase rotation factor and before the Inverse Fast Fourier Transform (IFFT) in SLM based OFDM (SLMOFDM) Systems. At clipping probability of 10-3, simulation results show that our proposed technique can reduce the PAPR up to 5dB for =64 and V=16. Additionally, ZCT based SLMOFDM systems also take advantage of frequency variations of the communication channel and can also offer substantial performance gain in fading multipath channels.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:4908
Deposited By: Assoc Prof Dr Varun Jeoti
Deposited On:23 Mar 2011 06:27
Last Modified:19 Jan 2017 08:23

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