Title :
Interference-Blocking Algorithm for OFDM Systems: Insensitive to Time and Frequency Synchronization Error
Author :
Ying, Rendong ; Liu, Rueywen ; Xu, Guozhi
Author_Institution :
Shanghai Jiaotong Univ.
Abstract :
A covariance matrix based anti-interference algorithm is proposed for SIMO OFDM systems. This algorithm constructs the interference-blocking filter without the information of the inferences. This algorithm is insensitive to the time synchronization error and to the carrier frequency synchronization error. Therefore, it is especially useful for the case when interferences are strong and unknown, such as the case in the unlicensed spectrum.
Keywords :
OFDM modulation; blind source separation; covariance matrices; interference (signal); synchronisation; SIMO OFDM systems; anti-interference algorithm; blind estimation; carrier frequency synchronization error; covariance matrix; interference-blocking algorithm; interference-blocking filter; time synchronization error; AWGN; Communications Society; Covariance matrix; Degradation; Frequency synchronization; Inference algorithms; Information filtering; Interference; OFDM; Spatial filters;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.272
