Multiple Invariance MUSIC-Based Blind Carrier Frequency Offset Estimation for OFDM System with Multi-Antenna Receiver

2010 ◽  
Vol 63 (2) ◽  
pp. 319-330 ◽  
Author(s):  
Xiaofei Zhang ◽  
Lingyun Xu ◽  
Fei Wang ◽  
Dazhuan Xu
Keyword(s):  
Carrier Frequency ◽  
Carrier Frequency Offset ◽  
Frequency Offset ◽  
Frequency Offset Estimation ◽  
Ofdm System ◽  
Carrier Frequency Offset Estimation

Study of the OFDM System Carrier Synchronization Technology

2014 ◽  
Vol 513-517 ◽  
pp. 2772-2774
Author(s):  
Wen Bin Wang ◽  
Dao Yuan Liu ◽  
Yu Qin Yao
Keyword(s):  
Carrier Frequency ◽  
Carrier Frequency Offset ◽  
Estimation Algorithm ◽  
Frequency Offset ◽  
Frequency Synchronization ◽  
Frequency Offset Estimation ◽  
Ofdm System ◽  
Carrier Synchronization ◽  
Carrier Frequency Offset Estimation ◽  
Primary Problem

The OFDM system modulates signal by using a plurality of spectrum aliasing orthogonal sub-carriers, so it is extremely sensitive to carrier frequency offset, and any tiny frequency offset may destroy the orthogonality of the sub-carriers, thereby seriously affecting the performance of the system. So carrier frequency offset is the primary problem for the OFDM technology, and in recent years it has also become a focus for researchers. Accurate frequency synchronization is the precondition for the OFDM system to work properly. The main purpose of this paper is to seek a more reliable and viable carrier frequency offset estimation algorithm on the results of previous studies.

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