摘要
滤波多音调制技术通过采用频谱不重叠的多载波调制技术,有效地克服了传统的多载波调制技术正交频分复用的频偏敏感性问题,同时通过不太复杂的均衡技术消除系统的码间干扰。理论分析与仿真证明,滤波多音调制系统有着比正交频分复用系统更好的抗载波频偏的能力。
Filtered multitone modulation is one of the filter bank modulation techniques. It exhibits significantly lower spectral overlapping between adjacent subchannels.Therefor it can overcome the sensitivities to carrier frequency offset of the traditional multicarrier modulation, such as OFDM. But per-subchannel equalization should be used to compensate the ISI. The results of theory analysis and computer simulation prove that FMT has a better performance than OFDM in the presence of the carrier frequency offset.
出处
《通信学报》
EI
CSCD
北大核心
2005年第9期123-128,共6页
Journal on Communications
基金
国家自然科学基金资助项目(60372029)
关键词
通信与信息系统
滤波多音调制
正交频分复用
信道间干扰
码间干扰
communication and information system
filtered multitone modulation
orthogonal frequency divisionmultiplexing
inter-channel interference
inter-symbol interference
