Title :
A weighted decision feedback equalizer with limited error propagation
Author_Institution :
CNET, France
Abstract :
A weighted decision feedback equalizer (WDFE) is presented. This DFE does not suffer from the error propagation phenomenon as the classical DFE does. This equalizer employs a device which computes a reliability value (i.e. a probability value for taking the right decision). Two different means which use this value in such a way as not to decide errors in the feedback loop are described. The equalizer has been tested over several channels and convincing performances are presented. In addition, this WDFE offers very good performances in blind mode operation
Keywords :
blind equalisers; decision feedback equalisers; mean square error methods; 64 QAM transmission; MSE degradation; blind equalizer; blind mode operation; feedback loop; limited error propagation; linear dispersive channels; mean square error degradation; probability value; reliability value; weighted DFE; weighted decision feedback equalizer; Bit error rate; Decision feedback equalizers; Degradation; Feedback loop; Mean square error methods; Performance evaluation; Probability; Quadrature amplitude modulation; Testing; Training data;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853297
