Journal
ETRI JOURNAL
Volume 35, Issue 4, Pages 714-717Publisher
ELECTRONICS TELECOMMUNICATIONS RESEARCH INST
DOI: 10.4218/etrij.13.0212.0552
Keywords
Peak-to-average power ratio; OFDM; sum of two random variables; transformation of random variables; PAPR; computational complexity reduction
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Peak power reduction techniques in orthogonal frequency division multiplexing (OFDM) has been an important subject for many researchers for over 20 years. In this letter; we propose a side-information-free technique that is based on the concept of random variable (RV) transformation. The suggested method transforms RVs into other RVs, aiming to reshape the constellation that will consequently produce OFDM symbols with a reduced peak-to-average power ratio. The proposed method has no limitation on the mapping type or the mopping order and has no significant effect on the bit error rate performance compared to other methods presented in the literature. Additionally, the computational complexity does not increase.
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