A pipelined VLSI NEXT canceller for premises applications

Author

Im, Gi-Hong ; Shanbhag, Naresh R.

Author_Institution

AT&T Bell Labs., Middletown, NJ, USA

Volume

3

fYear

1994

fDate

28 Nov- 2 Dec 1994

Firstpage

1487

Abstract

A near-end crosstalk (NEXT) canceller using a fine-grain pipelined architecture is presented. The architecture is derived by the application of the relaxed look-ahead technique. This technique is an approximation to the look-ahead technique and results in a minimal hardware overhead. Performance of the proposed algorithm is demonstrated for NEXT cancellers used in a 125 Mb/s twisted-pair distributed data interface (TPDDI) and the 155 Mb/s asynchronous transfer mode (ATM) local area network (LAN) applications. It is shown that the proposed pipelined architecture can be clocked at a rate of 107 times faster than the serial architecture with a maximum of 2.0 dB loss in the signal-to-noise ratio (SNR) for both the TPDDI and the ATM LAN applications

Keywords

VLSI; asynchronous transfer mode; crosstalk; data communication equipment; digital signal processing chips; interference suppression; local area networks; parallel architectures; pipeline processing; twisted pair cables; 125 Mb/s twisted-pair distributed data interface; 125 Mbit/s; 155 Mbit/s; ATM; LAN; TPDDI; asynchronous transfer mode local area network; fine-grain pipelined architecture; loss; near-end crosstalk; pipelined VLSI NEXT canceller; pipelined architecture; premises applications; relaxed look-ahead technique; signal-to-noise ratio; Algorithm design and analysis; Asynchronous transfer mode; Communication cables; Crosstalk; HDTV; Hardware; Local area networks; Signal processing algorithms; Transceivers; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-1820-X

Type

conf

DOI

10.1109/GLOCOM.1994.513024

Filename

513024