Peak-to-Average Power Ratio (PAPR) Reduction Methods in OFDM Systems

Peak-to-Average Power Ratio (PAPR) Reduction Methods in OFDM Systems
Author(s):
Monika Phulia, Parshant
Keywords:
OFDM, PAPR, HPA, CCDF
Abstract
Orthogonal frequency division multiplexing (OFDM) has been emerging as a standard for various high data rate wireless communication systems due to several benefits, which are spectral bandwidth efficiency, robustness to frequency selective fading channels, etc. In spite of these favourable properties, one of the major drawbacks in OFDM is its high peak-to-average-power ratio(PAPR) of the transmitted signals, which even results in high out-of-band radiation and bit error rate performance degradation. The reason is non-linear nature of high power amplifier. In this paper, a review of various PAPR reduction schemes has been done and, also the analysis of conventional techniques which tend to achieve the low computational complexity and provide better performance has been done. This paper discusses the advantages and limitations of important PAPR reduction schemes such as Clipping & Filtering, Partial Transmit Sequence, Selected Mapping, Coding, Tone Reservation, etc.
Article Details
Unique Paper ID: 142490 Publication Volume & Issue: Volume 2, Issue 2 Page(s): 144 - 147
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