An iterative soft interference cancellation and decoding technique to mitigate the effect of home-LAN on VDSL

Author

Marti, Sreekanth ; Ahmad, M.O.

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

2

fYear

2002

fDate

25-28 Nov. 2002

Firstpage

1000

Abstract

The presence of home LAN constitutes a major impairment to reliable transmission in the VDSL environment. A low complex iterative soft interference cancellation and decoding technique to mitigate the effect of home-LAN on VDSL is presented. To perform soft interference cancellation, VDSL and home-LAN signals are jointly detected using a soft in soft out multiuser receiver which consists of a soft interference canceler and demodulator combined with a set of turbo decoders. The soft interference canceller uses the a priori probabilities to perform interference cancellation. The turbo decoder produces the a posteriori probabilities which are fed back to the soft interference canceller and demodulator as a priori probabilities.

Keywords

digital subscriber lines; home computing; interference (signal); interference suppression; iterative decoding; local area networks; probability; turbo codes; 4 QAM; VDSL signals; a posteriori probabilities; a priori probabilities; demodulator; home-LAN; home-LAN signals; iterative decoding; iterative soft interference cancellation; reliable transmission; soft in soft out multiuser receiver; turbo code; turbo decoders; very high bit rate digital subscriber line; Bit rate; Demodulation; Frequency; Interference cancellation; Iterative decoding; Local area networks; Multiuser detection; Signal detection; Telephony; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, 2002. ICCS 2002. The 8th International Conference on

Print_ISBN

0-7803-7510-6

Type

conf

DOI

10.1109/ICCS.2002.1183283

Filename

1183283