PAPR reduction for single carrier FDMA LTE systems using frequency domain spectral shaping

Zuhanis B Mansor, Andrew R Nix, Joe P McGeehan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

The low peak-to-average power ratio (PAPR) in single- carrier systems has motivated the Long Term Evolution (LTE) Third Generation Partnership Project (3GPP) to adopt single carrier frequency division multiple access (SC-FDMA) as the uplink multiple access scheme. In a single-carrier (SC) system, traditional time domain pulse shaping is used to bandlimit the transmit signal. In this paper we show that by applying a frequency domain spectral shaping filter to SC-FDMA, the PAPR of a localized FDMA (LFDMA) signal can be further reduced at the expense of degraded bandwidth efficiency. Simulation results show that a PAPR reduction of 1.3 dB can be achieved for LFDMA when a raised cosine frequency domain spectral shaping filter with a roll-off factor of 0.22 is applied. Compared to the unfiltered system, the resulting bandwidth efficiency is 78.1%. This PAPR reduction can be used to enhance the power efficiency of the handset, or alternatively to improve uplink throughput and/or operating range.
Original languageEnglish
Title of host publicationProceedings of the 12th Annual Postgraduate Symposium on the Convergence of Telecommunications, Networking and Broadcasting, School of Computing and Mathematical Sciences, Liverpool John Moores University, 2011.
PublisherLiverpool John Moores University, School of Computing and Mathematical Sciences
ISBN (Print)9781902560250
Publication statusPublished - 27 Jun 2011

Bibliographical note

With accompanying conference presentation

The authors wish to acknowledge the financial support of Majlis Amanah Rakyat (MARA) and Universiti Kuala Lumpur (UniKL).

Keywords

  • SC-FDMA
  • OFDMA
  • 3GPP
  • PAPR
  • LTE
  • frequency domain spectral shaping
  • raising cosine

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