Training sequence based multiuser channel identification for cochannel interference cancellation in GSM

2003 ◽  
Author(s):  
H. Trigui ◽  
D.T.M. Slock
Keyword(s):  
Interference Cancellation ◽  
Training Sequence ◽  
Cochannel Interference ◽  
Channel Identification ◽  
Multiuser Channel

A Low-Complexity Algorithm of Joint Multiple Frequency Offsets and Channels Estimation in Cooperative Relay Systems

2013 ◽  
Vol 748 ◽  
pp. 1046-1050 ◽  
Author(s):  
Hui Yan ◽  
Zhong Pei Zhang
Keyword(s):  
Interference Cancellation ◽  
Low Complexity ◽  
Training Sequence ◽  
Iteration Scheme ◽  
Cooperative Relay ◽  
Decode And Forward ◽  
Relay Systems ◽  
Parallel Iteration ◽  
Correlation Properties ◽  
Frequency Estimator

A low complexity joint estimator of multiple CFOs and Channels is presented in cooperative relay systems. The new algorithm first utilizes correlation-based frequency estimator to get CFOs initial estimation, and then serial interference cancellation based on correlation properties of training sequence in different relays is done to obtain the initial channel estimation. Moreover, a parallel iteration scheme with interference cancellation is proposed to reduce time complexity of the traditional serial iteration. In the overall process, matrix inversion is avoided. Thus, the complexity of the proposed algorithm in both time and computation is much less than the existing algorithms. In last, simulation results verify the iterative algorithm achieves a good performance in Decode and Forward (DF) relay system.

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