Authors: Pooria Varahram Somayeh Mohammady Borhanuddin Mohd Ali
Publish Date: 2013/03/02
Volume: 72, Issue: 2, Pages: 1125-1137
Abstract
Peaktoaverage power ratio PAPR is one of the main drawbacks in orthogonal frequency division multiplexing OFDM systems High PAPR forces the power amplifier to back off in order to operate in its linear region which degrades the power efficiency of the system Several PAPR reduction techniques have been developed but most of them have not considered both complexity and PAPR reduction In this paper a novel PAPR reduction scheme based on the insertion of dummy sequences to an enhanced partial transmit sequence is proposed By applying this scheme the PAPR performance is enhanced compared to the conventional methods while the complexity is significantly reduced Numerical analysis is carried out with OFDM signal and QPSK modulation
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