Ubiquitous Computing and Communication Journal
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Title: Solving Peak Power Problems in Orthogonal Frequency Division Multiplexing
Authors: Dr. Ashraf A Eltholth`
In this paper, the problem of reducing the peak to average power ratio (PAPR) in an Orthogonal frequency division multiplexing (OFDM) system is considered. We propose the use of Walsh Hadamard Transform (WHT) as an intelligent scaling factor to reduce the dynamic range of the OFDM signal without the risk of amplifying the noise when restoring the signal to its original level. This technique offers an excellent solution to all of peak power problems in OFDM systems and without any loss in terms of spectral efficiency and without any side information being transmitted, and can be applied with low computational complexity.