Changyoung An, Byeongjae Kim and Heung-Gyoon Ryu, Chungbuk National University, Korea

Recently, new waveforms for the 5th generation cellular system have been studied in many ways. UFMC, FBMC (filter bank multi-carrier) and W-OFDM (window orthogonal frequency division multiplexing) waveforms are very strong candidates as a new waveform for 5G system. In this paper, we have evaluated the spectrum characteristic and BER performance of the waveforms under the effect of nonlinear HPA. Also, we like to show the comparison of the timefrequency resources of each system because it would be very important to estimate the spectral efficiency and communication throughput. As simulation results, it is confirmed that OOB power of each system increases, and OOB power increase of FBMC system is the biggest. Additionally, we have confirmed that performance of every system is degraded by strength of PA nonlinearity, and every system needs the PAPR reduction method for the nonlinear distortion compensation and power saving, even though it would be more complicated. Comparison table for the time-frequency resources requirement for the each modulation systems is included.

new waveform; OFDM; FBMC; UFMC; HPA nonlinearity