Decision feedback equalization using complex backpropagation algorithm

Author

Chang, Ching-Haur ; Siu, Sammy ; Wei, Che-Ho

Author_Institution

Chunghwa Telecom Training Inst., Taichung, China

Volume

1

fYear

1997

fDate

9-12 Jun 1997

Firstpage

589

Abstract

A decision feedback equalizer (DFE) using complex backpropagation (CBP) algorithm is presented in this paper. In passband multilevel signaling systems, learning algorithms with complex-valued parameters are generally required in adaptive equalizers. Conventional approaches using complex least mean square (CLMS) algorithm cannot be satisfactory due to their lack of capability in partitioning the signal space. A new approach using CBP is used to equip a DFE with better performance. Computer simulations show significant performance improvement compared to the conventional one

Keywords

backpropagation; decision feedback equalisers; telecommunication signalling; DFE; complex backpropagation algorithm; complex-valued parameters; decision feedback equalizer; learning algorithm; multilevel signaling systems; Backpropagation algorithms; Communication system signaling; Decision feedback equalizers; Delay estimation; Frequency; Neurofeedback; Neurons; Quadrature amplitude modulation; Quadrature phase shift keying; Signal mapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on

Print_ISBN

0-7803-3583-X

Type

conf

DOI

10.1109/ISCAS.1997.608827

Filename

608827