High PAPR Sequence Scrambling for Reducing OFDM Peak-to-Average Power Ratio

Konferenz: European Wireless 2016 - 22th European Wireless Conference
18.05.2016 - 20.05.2016 in Oulu, Finnland

Tagungsband: European Wireless 2016

Seiten: 5Sprache: EnglischTyp: PDF

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Gamage, Heshani; Rajatheva, Nandana; Latva-aho, Matti (Department of Communication Engineering, University of Oulu, Finland)

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.