Share Email Print

Proceedings Paper

Sequence and spread spectrum time domain reflectometry for transmission line analysis
Author(s): Jacklyn Reis; Agostinho L. S. Castro; João C. W. A. Costa; Jaume R. I. Riu; Klas Ericson
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

This paper describes Sequence Time Domain Reflectometry (STDR) and Spread Spectrum Time Domain Reflectometry (SSTDR), which utilizes concepts from direct sequence spread spectrum communications, as a technique for detecting impedance mismatches in telephone lines (twisted pair). The aim of this paper is to present methodologies for characterizing a subscriber loop, which is used for Digital Subscriber Line (DSL) technology, based on STDR and SSTDR tests. Those tests enable the TDR functionality to be incorporated into a DSL transceiver integrated circuit eliminating the need for costly test equipment. In addition to the cost savings, the characteristics of the STDR and SSTDR offer improved spectral compatibility, interference immunity and fault resolvability.

Paper Details

Date Published: 10 September 2007
PDF: 11 pages
Proc. SPIE 6776, Broadband Access Communication Technologies II, 67760L (10 September 2007); doi: 10.1117/12.735873
Show Author Affiliations
Jacklyn Reis, Federal Univ. of Pará (Brazil)
Agostinho L. S. Castro, Federal Univ. of Pará (Brazil)
João C. W. A. Costa, Federal Univ. of Pará (Brazil)
Jaume R. I. Riu, Ericsson (Sweden)
Klas Ericson, Ericsson (Sweden)

Published in SPIE Proceedings Vol. 6776:
Broadband Access Communication Technologies II
Raj Jain; Benjamin B. Dingel; Shozo Komaki; Shlomo Ovadia, Editor(s)

© SPIE. Terms of Use
Back to Top