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发明公开
CN105471799A 基于旁瓣抑制前缀的DWDM-OFDM实现方法及其系统 无效 - 驳回

基于旁瓣抑制前缀的DWDM-OFDM实现方法及其系统
摘要：
一种基于旁瓣抑制前缀的DWDM-OFDM实现方法及其系统，通过在调制信号进行并串转换前，对含有循环前缀的序列中插入SSP序列，使得修改后的序列的带外功率谱最小，从而降低DWDM-OFDM系统中的相邻载波干扰；本发明加入SSP的OFDM信号的旁瓣抑制比相对未加入SSP的OFDM信号的旁瓣抑制比上升了18dB，提高了OFDM信号的谱效率。
摘要（英）：

The invention relates to a sidelobe suppression prefix-based DWDM-OFDM implementation method and a system thereof. According to the method and system, before modulation signals are subjected to parallel-serial conversion, an SSP sequence is inserted into a cyclic prefix-containing sequence, so that the out-of-band power spectrum of the modified sequence is small, and therefore, adjacent carrier interference in a DWDM-OFDM system can be decreased; the sidelobe suppression ratio of OFDM signals with SSPs added therein is increased by 18dB compared with the sidelobe suppression ratio of OFDM signals with no SSPs, and therefore, the spectral efficiency of the OFDM signals can be improved.

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