Original scientific paper
https://doi.org/10.24138/jcomss.v11i4.95
Analytical bound for the CCDF of Crest Factor in NC-OFDM Systems
Mohammed Yassine Bendimerad
; Telecommunication Laboratory (LTT), Department of Telecommunication, University of Tlemcen, Algeria
Fatima Debbat
; Computer Science Department, Faculty of Technology, Mascara University, Mascara Algeria
Fethi Tarik Bendimerad
; Telecommunication Laboratory (LTT), Department of Telecommunication, University of Tlemcen, Algeria
Abstract
Non-contiguous orthogonal frequency division multiplexing (NC-OFDM) is a promising framework for wireless communication systems due to OFDM characteristics like the spectral bandwidth efficiency, robustness to frequency selective fading channels, etc. However, it has been widely known that multicarrier signals generated by OFDM technique exhibit a large peak to average power ration (PAPR), one of the main impediment that has limited the applicability of OFDM systems. Several approaches are employed in literature to derive the PAPR distribution and thus try to reduce it in OFDM context, as Central limit theorem and modern extreme value theory. In new contexts like NC OFDM systems when flexible access to spectrum is done with non contiguous portions, the PAPR distribution remains generally unknown, and it is necessary to describe it, since this is one of the key design parameters. In this correspondence, we develop the PAPR bound expression in NC-OFDM context.
Keywords
Complementary Cumulative Distribution Function (CCDF); Crest Factor (CF); Non-Contiguous Orthogonal Frequency Division Multiplexing (NC-OFDM); Peak to Average Power Ratio (PAPR)
Hrčak ID:
180010
URI
Publication date:
21.12.2015.
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