【摘要】 为了有效减小SC-FDMA系统的高峰值平均功率比(PAPR),采用DFT扩频技术对单载波频分多址(SC-FDMA)和正交频分多址(OFDMA)上行系统的PAPR性能进行比较与仿真分析。结果表明,这里采用DFT扩频方法能有效减小SCFDMA系统PAPR,且明显优于OFDMA系统。更多还原

【Abstract】 In order to reduce the high peak average power ratio(PAPR)of the SC-FDMA system,the DFT spread spectrum technology is adopted in this paper to perform comparison and simulation analysis for PAPR performances of single carrier frequency division multiple access(SC-FDMA) and orthogonal frequency division multiple access(OFDMA) uplink systems.The results show that DFT spread spectrum method adopted in this paper can effectively reduce PAPR of the SC-FDMA system,and is superior to the OFDMA system.更多还原