Review Paper on PAPR Reduction Techniquesin OFDM System

[摘要] For high rate data transmission in wireless communication, OFDM system is one which attracts every researcher towards it. Because it has several advantages such as high number of orthogonal sub-carriers, no inter-symbol interference, high spectral efficiency, tolerance in multipath delay spread, power efficiency, frequency selective fading immunity etc. Among all above advantage it has one major flaw of peak-to-average-power ratio (PAPR). In fact, PAPR in OFDM system is the most detrimental aspect which degrades power and spectral spreading [1]. In this paper, we review and analyze various PAPR reduction techniques and compare their results which describes that some technique mitigate PAPR to a specific extent but at the cost of BER degradation whereas some improve BER but with little amount of PAPR reduction.

[关键词] Orthogonal frequency division multiplexing (OFDM);Peak to-average-power ratio (PAPR);Bit error rate (BER). Selective mapping (SLM);Complementary cumulative distribution function (CCDF).