...空间上的散布性和晶振的自力性,来自分歧中继节点的旌旗灯号达到目标节点以后会发生分歧的符号准时偏移(MSTO)和载波频率偏移(MCFO),使得同步成绩绝对于传统通讯体系具有更年夜的挑衅性和庞杂性。
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载波频率偏移是OFDM系统实现的关键问题之一。
Carrier frequency offset is one of the key problems in OFDM system.
OFDM系统存在对数据符号同步和载波频率偏移极为敏感的问题。
The OFDM is sensitive to the synchronization of the OFDM symbol and the carriers' frequency excursion.
但两者都对载波频率偏移敏感，且在AWGN和多普勒频移环境下表现相当。
But both of them are sensitive to carrier frequency shift, further, they have comparative BER under AWGN and Doppler shift environment.
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