OFDM PAPR Reduction by Pre-Scrambling and Clipping

13th Biennial Baltic Electronics Conference (BEC 2012): Proceedings 2012
Alberts Zeļenkovs, Anna Litviņenko

This article presents a new method for Peakto- Average Power Ratio (PAPR) reduction of Orthogonal Frequency Division Multiplexing (OFDM) signal. The proposed method is based on a relatively simple processing – pre-scrambling of OFDM symbol bit-block. The modified msequence with the least peak-factor for scrambling is used. The stability of pre-scrambled OFDM signal to the clipping is examined as well. C/C++ computer simulation of OFDM system with 64 subcarriers and frequency domain blocktypepilot channel estimation is performed for AWGN multipath channel. As a result, bit error rate (BER) performance for various clipping levels is presented due to computer simulation. In addition, the Efficiency of joined pre-scrambling and clipping method is considered.

Keywords
Orthogonal Frequency Division Multiplexing, Peakto- Average Power Ratio, pre-scrambling
DOI
10.1109/BEC.2012.6376836
Hyperlink
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6376836

Zeļenkovs, A., Litviņenko, A. OFDM PAPR Reduction by Pre-Scrambling and Clipping. In: 13th Biennial Baltic Electronics Conference (BEC 2012): Proceedings, Estonia, Tallinn, 3-5 October, 2012. Piscataway: IEEE, 2012, pp.141-144. ISBN 978-1-4673-2773-2. ISSN 1736-3705. Available from: doi:10.1109/BEC.2012.6376836

Publication language
English (en)