Blind adaptation of decision feedback equalizers based on the constant modulus algorithm

2002 ◽  
Author(s):  
R.A. Casas ◽  
Zhi Ding ◽  
R.A. Kennedy ◽  
C.R. Johnson ◽  
R. Malamut
Keyword(s):  
Decision Feedback ◽  
Constant Modulus ◽  
Constant Modulus Algorithm ◽  
Decision Feedback Equalizers ◽  
Blind Adaptation

Novel DFE for Underwater Acoustic Channels

2013 ◽  
Vol 760-762 ◽  
pp. 691-694
Author(s):  
Yan Liu ◽  
Yuan Min Li
Keyword(s):  
Cost Function ◽  
Communication Systems ◽  
Channel Equalization ◽  
Decision Feedback ◽  
Underwater Acoustic Communication ◽  
Constant Modulus ◽  
Constant Modulus Algorithm ◽  
Underwater Acoustic ◽  
Underwater Acoustic Channels ◽  
Receive System

In underwater acoustic communication systems, the channel equalization community has recently given much attention to decision feedback equalization (DFE). It is because that the DFE offers intersymbol interference (ISI) cancellation with reduced noise enhancement. However, its key algorithm such as constant modulus algorithm (CMA) has moderate convergence rate and steady-state mean square error (MSE), which is not sufficient for the receive system of communication. So a new cost function is defined and then a novel DFE based on such cost function is proposed. The efficiency of the proposed DFE is proved by computer simulations.

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