Blind Timing and Frequency Offset Estimation in OFDM based Communication System

2006 ◽  
Author(s):  
Hee Wook Kim ◽  
Kunseok Kang ◽  
Do-Seob Ahn
Keyword(s):  
Communication System ◽  
Frequency Offset ◽  
Frequency Offset Estimation

Frequency Offset Estimation Algorithm of OFDMA Wireless Communication System Based on Compressed Sensing

2015 ◽  
Vol 7 (3) ◽  
pp. 55-62
Author(s):  
Ma Qinggong ◽  
Yang Bo
Keyword(s):  
Wireless Communication ◽  
Compressed Sensing ◽  
Communication System ◽  
Estimation Algorithm ◽  
Frequency Offset ◽  
Frequency Offset Estimation ◽  
Computation Complexity ◽  
Algorithmic Approach ◽  
Wireless Communication System ◽  
Overall Performance

The frequency offset problem of OFDMA wireless communication system has been an important obstructive factor for the rapid promotion of this technology. The frequency offset estimation algorithm of OFDMA wireless communication system based on compressed sensing reconstructs the optimized mathematical model of frequency offset. Under the premise of keeping its estimated performance, from the reduction of its computation complexity and the enhancement of real-time performance of the system, it provides an optimized algorithmic approach and thus improves the practicability of algorithm. The compressed sensing algorithm has realized the fast and accurate extraction of the frequency offset parameters, so the overall performance of the system can reach the optimal state.

Coarse Frequency Offset Estimation of TD-LTE Based on Spectrum Centroid

2013 ◽  
Vol 756-759 ◽  
pp. 3602-3606
Author(s):  
Yan Chao Fu ◽  
Chun Hui Zhou ◽  
Yuan Liang Dong ◽  
Zhi Yuan Shi
Keyword(s):  
Communication System ◽  
Frequency Offset ◽  
Frequency Offset Estimation ◽  
Estimation Algorithms ◽  
Lower Complexity ◽  
Simulation Results ◽  
Integer Frequency Offset

Frequency offset brings a great impact on communication, a small amount of which may cause a serious decline in the performance of communication system. So frequency offset estimation has great significance. TD-LTE system is very sensitive to the frequency offset, we propose a method to estimate the integer frequency offset through calculating spectrum centroid. Simulation results show that the algorithm has a good performance and lower complexity compared with some integer frequency offset estimation algorithms based on data-aided.

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