On the equivalence of the simultaneous and separate MMSE optimizations of a DFE FFF and FBF

Author

Smee, John E. ; Beaulieu, Norman C.

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada

Volume

45

Issue

2

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

156

Lastpage

158

Abstract

There is great interest in the use of decision feedback equalization (DFE) to mitigate the effects of intersymbol interference (ISI) on wireless multipath fading channels. The coefficients of a DFE feedforward filter (FFF) and feedback filter (FBF) are usually adjusted based on the minimum mean square error (MMSE) criterion. The equalizer coefficients can be calculated by recursive adaptation or by direct computation based on a channel estimate. The equivalence of the simultaneous and separate MMSE optimization of the FFF and FBF of a finite-length DFE is established

Keywords

decision feedback equalisers; fading; feedforward; filtering theory; intersymbol interference; multipath channels; optimisation; DFE feedback filter coefficients; DFE feedforward filter coefficients; ISI; channel estimation; decision feedback equalization; finite length DFE; intersymbol interference; minimum mean square error; recursive adaptation; separate MMSE optimization; simultaneous MMSE optimization; wireless multipath fading channels; Autocorrelation; Communications Society; Computational complexity; Decision feedback equalizers; Fading; Field-flow fractionation; Filters; Intersymbol interference; Recursive estimation;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.554362

Filename

554362