Enhanced linear interpolation for low sampling rate asynchronous channels

Author

Berman, David ; Melas, C.M. ; Hutchins, Robert A.

Author_Institution

Almaden Res. Center, IBM, San Jose, CA, USA

Volume

5

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

3025

Abstract

Linear interpolation can be used to recover synchronous samples from asynchronous ones, replacing PLO hardware with a digital algorithm. With Enhanced Linear Interpolation, (ELI), computing additional samples midway between existing samples effectively doubles the sampling frequency. Linear interpolation is then used between the asynchronous samples and midpoint samples. The interpolation error is computed as a function of input waveform parameters, sampling frequency, and midpoint interpolator parameters, for both synchronous and asynchronous channel equalization. ELI allows the sampling rate to be below the bit rate

Keywords

equalisers; interpolation; magnetic recording; partial response channels; signal sampling; asynchronous channels; asynchronous samples; digital algorithm; enhanced linear interpolation; input waveform parameters; interpolation error; midpoint interpolator parameters; midpoint samples; sampling frequency; synchronous samples; Bit rate; Delay; Finite impulse response filter; Frequency; Hardware; Interpolation; Nonlinear filters; Sampling methods; Timing; US Department of Transportation;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE

Print_ISBN

0-7803-7206-9

Type

conf

DOI

10.1109/GLOCOM.2001.965982

Filename

965982