Low Complexity Joint PAPR Reduction and Demodulation Technique for OFDM Systems

Abstract

In this paper, we derive a novel, low-complexity, joint peak-average-power-ratio (PAPR) reduction and demodulation technique for orthogonal frequency division multiplexing (OFDM) systems. The method exploits the properties of the discrete Fourier transform (DFT) matrix to reconstruct the thresholded samples at the receiver. The signal processing required at the transmitter side is very low. The technique gives an impressive reduction in PAPR value with good bit error rate (BER) performance compared to existing methods and also incorporates an efficient demodulation scheme for OFDM. We have also developed a new time-domain method for transmitting side information implicitly along with the transmitted data. Performance advantages of the proposed method are substantiated through extensive computer simulation studies and are compared with that of well-known prevailing methods.

KEYWORDS:

• BER
• CCDF
• OFDM
• PAPR
• Side information
• SNR

Acknowledgment

The authors are grateful to the Deanship of Scientific Research (DOSR) of King Khalid University, Abha, KSA, for funding this work through the Research Groups Program under Grant Number R.G.P. 1/143/40.

Additional information

Notes on contributors

V. P. Thafasal Ijyas

V P Thafasal Ijyas completed his BTech, MTech and PhD from National Institute of Technology, Calicut, India. His research interests are wireless communication, signal processing and estimation theory. Currently, he is working as an assistant professor at King Khalid University, Abha, KSA. He has published research articles in many reputed scientific journals and is an active reviewer for many international journals. Corresponding author. Email: [email protected]; [email protected]

Mohammed I. Al-Rayif

Mohammed I Al-Rayif received his BSc degree in electrical engineering from King Saud University, Riyadh, KSA, and MSc and PhD degrees from Newcastle University, UK, in 2006 and 2010, respectively, in the field of communication and signal processing. He has worked in many strategic positions in the Directorate General of Border Guard, Ministry of Interior in S A, such as the head of the wired/wireless communication systems and the director of the communication management. He was the chairman of the Electrical Engineering Department and the Vice-Dean of the College of Engineering at King Khalid University, Abha, S A Currently, he is a cooperative faculty member with the Department of Electrical Engineering, Al-Muzahmia Branch of King Saud University. He is a member of the Saudi Council of Engineers (SCoE), IEEE, and IEEE Communication Society (ComSoc). His research interests include MIMO systems, spatial modulation techniques, mm-wave communication, and optical communication. Dr Rayif has contributed his research publications to many reputed international journals and conferences. Email: [email protected]; [email protected]