Dynamics limited shaping for fast digital transmission

Author

Fischer, Robert F H ; Huber, Johannes B.

Author_Institution

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

Volume

1

fYear

1995

fDate

18-22 Jun 1995

Firstpage

22

Abstract

A new combined precoding/shaping technique for fast digital transmission is proposed. Major advantages of this “dynamics shaping” are: dynamics of the signal at the input of the decision device are reduced by a great amount. Thereby, A/D-conversion, adaptive equalization, and symbol timing are rather facilitated. A trade-off between signal dynamics at the transmitter output, decision device input and the SNR-gain by noise whitening is offered. For dynamics limitation relevant in practice, gains up to 6 dB are achieved. Nevertheless, system complexity is lower than in other precoding/shaping techniques. Numerical results are presented for a HDSL application in the German Telekom subscriber network

Keywords

adaptive equalisers; communication complexity; digital communication; encoding; interference (signal); pulse amplitude modulation; signal processing; subscriber loops; synchronisation; white noise; 6 dB; A/D-conversion; German Telekom subscriber network; HDSL application; PAM; adaptive equalization; combined precoding/shaping technique; decision device; dynamics limitation; dynamics limited shaping; fast digital transmission; gains; noise whitening; signal dynamics; symbol timing; system complexity; Adaptive equalizers; Baseband; Blind equalizers; Decision feedback equalizers; Finite impulse response filter; Intersymbol interference; Matched filters; Nonlinear filters; Signal to noise ratio; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2486-2

Type

conf

DOI

10.1109/ICC.1995.525132

Filename

525132