Comparison of precoding schemes for digital subscriber lines

Author

Fischer, Robert F H ; Huber, Johannes B.

Author_Institution

Lehrstuhl fur Nachrichtentech., Erlangen-Nurnberg Univ., Germany

Volume

45

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

334

Lastpage

343

Abstract

Precoding at the transmitter side is a practicable method for transmission over intersymbol interference channels. In contrast to decision-feedback equalization no error propagation occurs and coded modulation can be applied as for the intersymbol interference free channel. Tomlinson-Harashima (1971, 1972) precoding and flexible precoding are analyzed and compared. The dualities and differences are discussed. The focus of interest is the application of precoding to fast digital transmission over twisted pair lines, such as high-rate or asymmetric digital subscriber lines. It turns out that flexibility-which is not necessary in the specific application, digital subscriber lines-of flexible precoding is paid with a performance loss compared to Tomlinson-Harashima precoding

Keywords

encoding; intersymbol interference; modulation coding; subscriber loops; telecommunication channels; twisted pair cables; Tomlinson-Harashima precoding; asymmetric digital subscriber lines; coded modulation; decision-feedback equalization; fast digital transmission; flexible precoding; high-rate digital subscriber lines; intersymbol interference channels; intersymbol interference free channel; precoding schemes; transmitter; twisted pair lines; AWGN; DSL; Decision feedback equalizers; Intersymbol interference; Maximum likelihood estimation; Modulation coding; Passband; Performance loss; Telephony; Transmitters;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.558696

Filename

558696