High PAPR Sequence Scrambling for Reducing OFDM Peak-to-Average Power Ratio
Conference: European Wireless 2016 - 22th European Wireless Conference
05/18/2016 - 05/20/2016 at Oulu, Finnland
Proceedings: European Wireless 2016
Pages: 5Language: englishTyp: PDF
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Authors:
Gamage, Heshani; Rajatheva, Nandana; Latva-aho, Matti (Department of Communication Engineering, University of Oulu, Finland)
Abstract:
A major drawback of orthogonal frequency division multiplexing (OFDM) systems is their large peak to average power ratio (PAPR). In this paper, we propose a simple selective-mapping (SLM) technique using scrambling to reduce the PAPR of OFDM signals. This technique selects symbol sequences with high PAPR and scrambles them until a low PAPR sequence below a specific threshold is generated. The computational complexity of the proposed scheme is considerably lower than the traditional SLM. Also we investigate the performance of the system through simulations.