关键词: 脉冲成型, 峰均比, 正交频分复用, 滤波器组多载波

Abstract:

In order to solve the high PAPR(Peak to Average Power Ration) problem in FBMC(Filter Bank MmultiCarrier) system, based on the prototype filter and its polyphase structure in FBMC system, a solution is proposed to reduce PAPR in FBMC system using pulse shaping technique, which borrows ideas from solutions to reduce PAPR in OFDM(Orthogonal Frequency Division Multiplexing) system. The cyclic shifting is implemented in time\|domain by adding weighting in frequency\|domain after S/P(Serial to Parallel) in synthesis filer banks, thereby the reduction of PAPR is accomplished. The simulation results indicate that PAPR is obviously reduced after importing PS in FBMC system.

Key words: pulse shaping, peak to average power ration(PAPR), orthogonal frequency division multiplexing(OFDM), filter bank mmulticarrier(FBMC)