Title :
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
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;
Conference_Titel :
Communication Systems, 2002. ICCS 2002. The 8th International Conference on
Print_ISBN :
0-7803-7510-6
DOI :
10.1109/ICCS.2002.1183283
