Clipping on COFDM with phase on demand

This letter presents a simple and effective peak reduction method to achieve a desired peak-to-average power ratio (PAPR). The method is called phase on demand in which a fixed phase vector is added to input vectors only if it helps reduce the peak of the orthogonal frequency-division multiplexing (...

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Bibliographic Details
Published in:IEEE communications letters 2003-02, Vol.7 (2), p.49-51
Main Authors: Ju, S.M., Leung, S.H.
Format: Article
Language:English
Subjects:
Applied sciences
Autocorrelation
Block codes
Clipping
Demand
Detectors
Exact sciences and technology
Filtering
Frequency division multiplexing
Marketing
Mathematical analysis
Maximum likelihood detection
Multiplexing
OFDM
Peak to average power ratio
Phase detection
Reduction
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Vectors
Vectors (mathematics)
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Description
Summary:This letter presents a simple and effective peak reduction method to achieve a desired peak-to-average power ratio (PAPR). The method is called phase on demand in which a fixed phase vector is added to input vectors only if it helps reduce the peak of the orthogonal frequency-division multiplexing (OFDM) signal otherwise no phase is added. Repeated clipping and filtering is applied whenever the PAPR exceeds a desired value. To avoid sending side information about the phase, a maximum-likelihood phase detector is derived. Simulation results show that the new method is an efficient peak reduction technique for coded OFDM (COFDM).
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2002.808399