A throughput improvement scheme for asymmetrical digital subscriber line (ADSL) transceivers

Author

Rashdi, Adnan ; Sheikh, Noor M. ; Abbas, S. Aun

Author_Institution

Dept. of Electr. Eng., Univ. of Eng. & Technol., Lahore

fYear

2003

fDate

2003

Firstpage

135

Lastpage

140

Abstract

Echo cancellation technique enables full duplex transmission using the same transmission band and thereby increases the aggregate data throughput of a channel. This tutorial paper introduces high speed echo cancellation for Full Rate (ITU-T Recommendation G.992.1) and Splitterless (ITU-T Recommendation G.992.2, aliased G.Lite) ADSL Transceivers. Symmetric and multirate Asymmetric echo cancellation Transceiver structures based completely on time domain or frequency domain as well as both time and frequency domain echo cancellation have been analyzed using different algorithms for performance and computational complexity. Combined Time and Frequency Domain Echo Cancellation (TAFDEC) structure with the so called DMT algorithm appears to be most suitable to achieve lower complexity with better performance as compared to echo cancellation in either time or frequency domain using LMS algorithm

Keywords

digital subscriber lines; echo suppression; transceivers; ADSL; DMT algorithm; TAFDEQ; asymmetrical digital subscriber line transceivers; combined time and frequency domain echo cancellation; echo cancellation; frequency domain; full duplex transmission; throughput improvement scheme; time domain; Aggregates; Algorithm design and analysis; Computational complexity; DSL; Echo cancellers; Frequency domain analysis; Performance analysis; Throughput; Time domain analysis; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Multi Topic Conference, 2003. INMIC 2003. 7th International

Conference_Location

Islamabad

Print_ISBN

0-7803-8183-1

Type

conf

DOI

10.1109/INMIC.2003.1416670

Filename

1416670