Performance of OPS-SAP technique for PAPR reduction in IEEE 802.11p scenarios Articles uri icon

publication date

  • December 2016

start page

  • 78

end page

  • 88

volume

  • 52

International Standard Serial Number (ISSN)

  • 1570-8705

Electronic International Standard Serial Number (EISSN)

  • 1570-8713

abstract

  • Vehicular Ad Hoc Networks (VANETs) are wireless networks that emerged thanks to the rapid evolution of wireless technologies and the automotive industry. The IEEE 802.11p standard is part of a group of standards related to all layers of protocols for Wireless Access in Vehicular Environment (WAVE) communications, which defines Medium Access Control (MAC) and Physical (PHY) levels. The PHY layer of IEEE 802.11p is essentially based on Orthogonal Frequency Division Multiplexing (OFDM) due to its advantages. However, OFDM signal suffers from high Peak-to-Average Power Ratio (PAPR) at the transmitter side, which causes a significant power efficiency penalty. An efficient peak power reduction technique is Simple Amplitude Predistortion aided by Orthogonal Pilot Sequences (OPS-SAP), which consists in moving certain outer constellation points of the frequency-domain OFDM symbol. In this paper, we propose the application of this OPS-SAP scheme in the IEEE 802.11p scenario, and, moreover, its evaluation under a complete PHY layer. (C) 2016 Elsevier B.V. All rights reserved.

keywords

  • VANETs; OFDM; PAPR reduction; OPS-SAP; Peak power reduction; Amplitude predistortion; OFDM systems; Signals