Performance Evaluation of Modified SLM Technique in OFDM System Using Selected Codeword Shift

• Main Authors: Abdullah, E. (Author), Choi B. (Author), Idris, A. (Author), Saparon, A. (Author), Sikora A. (Author), Wang S. (Author)
• Format: Article
• Language: English
• Published: EDP Sciences 2016
• Subjects: BER performance; Bit error rate; Data handling; Electromagnetic signals; Error statistics; Fast Fourier transforms; Inverse fast Fourier transforms; Multiple data; OFDM systems; Orthogonal frequency division multiplexing; Peak average power ratios; Selective mapping; Side information; Signal processing; Transmitters
• Online Access: View Fulltext in Publisher; View in Scopus

 Selective Mapping (SLM) is a well-known technique used in OFDM System to reduce high Peak-Average Power Ratio (PAPR). High PAPR occurred during signal processing which multiple data are converted into electromagnetic signal via Inverse Fast Fourier transform (IFFT) at the transmitter. Even though SLM technique has a potential to reduce high PAPR, it disrupts the overall performance of bit error rate (BER) at receiver part. In this paper, a modified SLM has been proposed using circulant shift and embedded bit side information to overcome the BER performance degradation at the receiver part as well as to further improve the PAPR performance at the transmitter part. The results have shown an encouraging improvement of PAPR and BER to the OFDM system performance. © 2016 The Authors, published by EDP Sciences.