The out-of-band emission in wireless OFDM can also be reduced.The second one is using Discrete Prolate Spheroidal Sequences (DPSS) to design pulse shaping filters.

• 另一种是基于正交的离散长球面序列DPSS（Discrete Prolate Spheroidal Sequences）的OFDM/OQAM系统时频局域优化脉冲成形滤波器设计方法。