Comparison of data directed estimators and decision feedback lattice equaliser algorithms´ performance on fading channels

Author

Cilliers, J.E. ; Linde, L.P.

Author_Institution

Dept. of Electr. & Electron. Eng., Pretoria Univ., South Africa

Volume

2

fYear

1996

fDate

24-27 Sep 1996

Firstpage

1083

Abstract

This paper compares the performance of two adaptive equalisation algorithms, namely the recursive least-squares decision feedback lattice (RLS DFE lattice) and the data directed estimator (DDE) algorithm. The two algorithms represent two different approaches to the channel equalisation problem, as the RLS DFE lattice is based on a recursive algorithm, and the DDE is a block processing algorithm. This paper compares the performance of the two algorithms in a fading HF channel in a typical QPSK communication system. The bit error rates (BER) and the computational complexity of the algorithms are compared to evaluate their effectiveness

Keywords

adaptive equalisers; computational complexity; decision feedback equalisers; digital radio; error statistics; fading; least squares approximations; multipath channels; quadrature phase shift keying; recursive estimation; DDE algorithm; QPSK communication system; RLS DFE lattice; adaptive equalisation; bit error rates; block processing algorithm; channel equalisation; computational complexity; data directed estimator; data directed estimators; decision feedback lattice equaliser algorithms; fading HF channel; fading channels; performance; recursive least-squares decision feedback lattice; Adaptive equalizers; Bit error rate; Decision feedback equalizers; Digital communication; Fading; Lattices; Quadrature phase shift keying; Resonance light scattering; Signal processing; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 1996., IEEE AFRICON 4th

Conference_Location

Stellenbosch

Print_ISBN

0-7803-3019-6

Type

conf

DOI

10.1109/AFRCON.1996.563050

Filename

563050