TIME-DOMAIN WINDOWING OF MULTI-BAND OFDM SYSTEM TO ENABLE SPECTRAL SCULPTING

摘要

A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier transforming the tones to a plurality of time-domain samples (312), copying a plurality of the time-domain samples as a portion of a cyclic dock (314), the cyclic bl>Ak (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic bl>Ak (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter is a function $(k) having the property that $(k) + $(k +N