A frequency-domain decision feedback equalizer for multipath echo cancellation

2002 ◽  
Author(s):  
K. Berberidis ◽  
J. Palicot
Keyword(s):  
Frequency Domain ◽  
Decision Feedback ◽  
Echo Cancellation ◽  
Decision Feedback Equalizer

Decision Feedback Equalizer with Frequency Domain Bidirectional Noise Prediction for MIMO-SCFDE System

2017 ◽  
Vol E100.B (3) ◽  
pp. 433-439 ◽  
Author(s):  
Zedong XIE ◽  
Xihong CHEN ◽  
Xiaopeng LIU ◽  
Lunsheng XUE ◽  
Yu ZHAO
Keyword(s):  
Frequency Domain ◽  
Decision Feedback ◽  
Decision Feedback Equalizer ◽  
Noise Prediction

Adaptive decision feedback equalizer with dynamic principle for echo cancellation

2018 ◽  
Vol 40 (16) ◽  
pp. 4455-4471
Author(s):  
SK Mastan Sharif ◽  
K Satya Prasad ◽  
D Venkata Rao
Keyword(s):  
Signal Propagation ◽  
Decision Feedback ◽  
Echo Cancellation ◽  
Decision Feedback Equalizer ◽  
Least Mean Square ◽  
System Quality ◽  
Echo Signal ◽  
Step Size ◽  
Comparison Results ◽  
Least Mean Square Algorithm

Adaptive decision feedback equalizer (ADFE) based on Least Mean square algorithm (LMS) has emerged as a novel tool for signal propagation without noise. However, it has the limitation of computational complexity. Since it has been reported that substantial echo cancellation leads to increased system quality and capacity, this paper proposes a dynamic LMS-based ADFE (DLMS-ADFE) to cancel the generation of the echo signal. The DLMS-ADFE has two dynamic principles in updating the coefficients. The first principle has varying step-size and the second principle has varying degree and magnitude of the signal. The comparison results show that the DLMS-ADFE is outperforming LMS-ADFE.

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