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Selective Bit Permutation Method for Peak-Average Power Ratio (PAPR) Reduction in OFDM System

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Energy efficiency is essential in mobile communication networks. High Peak-Average Power Ratio (PAPR) has been an inherent drawback of Orthogonal Frequency Division Multiplexing (OFDM) for decades. The peak value of power signals causes two serious problems where it reduces the power efficiency of Radio Frequency (RF) amplifier and increases the computational complexity in analog to digital (A/D) and digital to analog (D/A) converters. Consequently, this would increase the cost of extending the linear range of the RF amplifier as well as the complexity of the A/D or D/A converter. The motivation to reduce the high PAPR is influenced by the current demands of telecommunication consortium that are aiming for reduced power, high data rates and low-cost system. A method to reduce high PAPR by using this novel selective bit permutation method is introduced. This method does not only provide a better PAPR reduction performance but also to maintain the error performance at the receiver compared to the other method such as Selective Mapping (SLM) and Data Position Permutation (DPP).
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Keywords: Bit Permutation; Orthogonal Frequency Division Multiplexing (OFDM); Peak-to-Average Power Ratio (PAPR); Selective Mapping (SLM)

Document Type: Research Article

Affiliations: Faculty of Electrical Engineering, Universiti Teknologi Mara, 40450 Shah Alam, Selangor Malaysia

Publication date: 01 October 2016

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