于正交频分复用(OFDM)存在由带外辐射过高、峰均比(PAPR)过大等缺点，面向第5代移动通信(5G)的第3代合作伙伴计划(3GPP)的新无线空口(NR)标准，各大通信厂商都提出了包括滤波正交频分复用(Filtered-OFDM)、加窗OFDM、滤波器组OFDM(FB-OFDM)等新波形技术。考虑到5G更高的通信速率及带宽需求,并需适用于6 GHz以，上的高频通信(尤其是毫米波频段) ,5G候选波形需要更高的时频效率和更优的带外辐射特性,以满足5G通信的要求"。(Due to the shortcomings of orthogonal frequency division multiplexing (OFDM), such as excessive out of band radiation and high peak to average ratio (PAPR), new wireless air interface (NR) standard for 3G Partner Program (3GPP) of 5g mobile communication has been proposed by major communication manufacturers, including filtered OFDM, windowed OFDM, filter bank OFDM, etc. Considering the higher communication rate and bandwidth requirements of 5g, and being suitable for high frequency communication (especially millimeter wave band) above 6 GHz, 5g candidate waveform needs higher time-frequency efficiency and better out of band radiation characteristics to meet the requirements of 5g communication.)