Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems

Hussain Falih Mahdi, Mahamod Ismail, Rosdiadee Nordin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The orthogonal frequency division multiplexing (OFDM) has attracted many researchers in the last decade due to the many advantages of this system. The intersymbol interference (ISI) free transmission and the high bit rate are two of the OFDM's advantages. Although, OFDM systems as the other communication systems, they need to estimate the channel state information to reduce the Bit Error Rate (BER), therefore, many estimation techniques have been developed such as the least squares error (LSE). However, these estimation methods involve insertion of pilot tones in the original OFDM signal, where this OFDM signal suffers from the effect of high peak powers when compared to the average power, which known as the peak to average power ratio (PAPR). Hence, a PAPR reduction technique should be employed to overcome the problem without affecting the pilot tones. In this paper, the joint performance of some PAPR-based reduction techniques and the comb-type-based channel estimation method has been proposed and evaluated. The simulation results show that the selected mapping (SLM), amplitude clipping, and the unitary matrix transformation (UMT) based PAPR reduction methods have different effects on the estimated channel, where the SLM did not affected by the pilot tones while the UMT will destroy the pilot tones as like the amplitude clipping, because the SLM did not change the pilot power while the UMT do that, so that, the UMT and clipping methods are not recommended without preprocessing if the OFDM designer needs good estimated channel state information.

Original languageEnglish
Title of host publicationProceeding - 2013 IEEE Student Conference on Research and Development, SCOReD 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages154-159
Number of pages6
ISBN (Print)9781479926565
DOIs
Publication statusPublished - 6 Jan 2015
Event2013 11th IEEE Student Conference on Research and Development, SCOReD 2013 - Putrajaya
Duration: 16 Dec 201317 Dec 2013

Other

Other2013 11th IEEE Student Conference on Research and Development, SCOReD 2013
CityPutrajaya
Period16/12/1317/12/13

Fingerprint

Channel estimation
Orthogonal frequency division multiplexing
Channel state information
Intersymbol interference
Bit error rate
Communication systems

Keywords

  • Amplitude clipping
  • channel estimation
  • complexity reduction
  • LSE
  • OFDM
  • PAPR
  • SLM

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Biomedical Engineering
  • Electrical and Electronic Engineering

Cite this

Mahdi, H. F., Ismail, M., & Nordin, R. (2015). Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems. In Proceeding - 2013 IEEE Student Conference on Research and Development, SCOReD 2013 (pp. 154-159). [7002562] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SCOReD.2013.7002562

Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems. / Mahdi, Hussain Falih; Ismail, Mahamod; Nordin, Rosdiadee.

Proceeding - 2013 IEEE Student Conference on Research and Development, SCOReD 2013. Institute of Electrical and Electronics Engineers Inc., 2015. p. 154-159 7002562.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mahdi, HF, Ismail, M & Nordin, R 2015, Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems. in Proceeding - 2013 IEEE Student Conference on Research and Development, SCOReD 2013., 7002562, Institute of Electrical and Electronics Engineers Inc., pp. 154-159, 2013 11th IEEE Student Conference on Research and Development, SCOReD 2013, Putrajaya, 16/12/13. https://doi.org/10.1109/SCOReD.2013.7002562
Mahdi HF, Ismail M, Nordin R. Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems. In Proceeding - 2013 IEEE Student Conference on Research and Development, SCOReD 2013. Institute of Electrical and Electronics Engineers Inc. 2015. p. 154-159. 7002562 https://doi.org/10.1109/SCOReD.2013.7002562
Mahdi, Hussain Falih ; Ismail, Mahamod ; Nordin, Rosdiadee. / Investigation of a joint channel estimation technique for PAPR reduction in OFDM systems. Proceeding - 2013 IEEE Student Conference on Research and Development, SCOReD 2013. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 154-159
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