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.
本发明涉及在正交频分复用（OFDM）接收机中补偿载波频率偏移的方法和系统。
The invention relates to a method and a system for compensating a carrier frequency offset in an orthogonal frequency division multiplexing (OFDM) receiver.
多普勒不仅造成宽带水声通信信号的载波频率偏移，而且引起码元符号的展宽或压缩。
Doppler effect causes not only carrier frequency offset, but also symbol expansion or compression for wideband acoustic communication signal.
对于多载波系统，载波频率的偏移会导致子信道之间产生干扰。
The offset of carrier frequency can cause interference between subchannels in a multicarrier system.
基于连续OFDM符号上的导频子载波，给出了联合频率偏移纠正和信道估计方法。
In this paper, the pilot subcarriers on two consecutive OFDM symbols are utilized for joint frequency offset correction and channel estimation.
在通信系统中，接收机的同步要求精确地估计一些参数，比如载波频率和相位偏移。
In communication systems, the synchronization of the receiver requires to accurately estimate a number of parameters such as the carrier frequency and phase offset.
在通信系统中，接收机的同步要求精确地估计一些参数，比如载波频率和相位偏移。
In communication systems, the synchronization of the receiver requires to accurately estimate a number of parameters such as the carrier frequency and phase offset.
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