Title: PAPR reduction in wavelet packet-based OFDM using PSO-based PTS technique

Authors: Pushpinder Singh; Saloni Pal; Neetu Sood

Addresses: Department of Electronics and Communication, Dr. B.R. Ambedkar, National Institute of Engineering, Jalandhar PIN – 144011, Punjab, India ' Electrical and Computer Engineering Department, University of Canterbury, 20 Kirkwood Ave, Upper Riccarton, Christchurch 8041, New Zealand ' Electronics and Communication Engineering Department, Dr. B.R. Ambedkar, National Institute of Engineering, Jalandhar PIN – 144011, Punjab, India

Abstract: In multicarrier modulation scheme, PAPR reduction is the main problem. Techniques mentioned in literature are either too complex or not optimal. In this paper, an attempt has been made to reduce the PAPR of multi carrier modulation with the much less complexity. Wavelet packet-based orthogonal frequency division multiplexing has been employed with orthogonal subcarriers and similarly to OFDM high spectral efficiency is achieved in WP-OFDM by the overlapping subcarriers spectra. Further, PSO-based PTS techniques have been used to reduce the PAPR with much less complexity as compared to conventional optimal PTS technique in which search complexity increases exponentially. The performance of WP-OFDM for PTS technique and PSO-based PTS techniques have been implemented in this paper. Also, the simulation results are obtained shows that the PAPR is reduced significantly with much less search complexity.

Keywords: orthogonal frequency division multiplexing; wavelet packet based OFDM; peak to average power ratio; PAPR; partial transmit sequence; PTS; multicarrier modulation; MCM; particle swarm optimisation; PSO; WP-OFDM; simulation.

DOI: 10.1504/IJSCC.2017.081541

International Journal of Systems, Control and Communications, 2017 Vol.8 No.1, pp.89 - 99

Received: 03 Jun 2015
Accepted: 13 Jul 2016

Published online: 12 Jan 2017 *

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