一种降低OFDM系统PAPR的专利，有较强的参考价值-OFDM systems to reduce PAPR of a patent, there is a strong reference value

OnPerformanceLimitsofDFTSpreadOFDMSystems DFT Spread OFDM has been proposed recently to reduce the Peak to Average Power Ratio (PAPR) of conventional OFDM transmission. Besides PAPR reduction, an important implication of DFT Spreading is that the ind