Title :
An iterative threshold decoding with soft decisions in ADSL-systems
Author :
Kalatchikov, Alexander A.
Author_Institution :
Siberian State Univ. of Telecommun. & Informatics, Novosibirsk, Russia
Abstract :
An iterative threshold decoder for convolution codes, with large constraint length, is developed which uses soft decisions from the channel output. These soft-values carry information about the reliability of demodulator-decisions and are used by the iterative decoder between iterations. Using soft decisions for iterative threshold decoders increases coding gain. Simulations results are shown.
Keywords :
convolutional codes; demodulators; digital subscriber lines; iterative decoding; ADSL-systems; channel output soft decisions; coding gain; convolution code constraint length; demodulator-decisions reliability; iterative threshold decoding; Convolution; Error probability; Informatics; Iterative algorithms; Iterative decoding; OFDM modulation; Parity check codes; Quadrature amplitude modulation; Viterbi algorithm;
Conference_Titel :
Electron Devices and Materials, 2003. Proceedings. 4th Annual 2003 Siberian Russian Workshop on
Print_ISBN :
5-7782-0412-4
DOI :
10.1109/SREDM.2003.1225184
