Pulse or digital communications – Systems using alternating or pulsating current – Antinoise or distortion
Reexamination Certificate
2005-07-26
2005-07-26
Tran, Khai (Department: 2637)
Pulse or digital communications
Systems using alternating or pulsating current
Antinoise or distortion
C375S341000, C714S794000
Reexamination Certificate
active
06922446
ABSTRACT:
A digital transmission system utilizing data coding at the transmitter and data decoding at the receiver, the decoding being iterative, reliability data about soft decisions being calculated for each iteration. The last iteration results in a hard decision. Soft decisions are transformed so as to normalize the mean value of the reliability data, using evolutive weighting of the soft decisions with the received data. The coding is preferably a product code concatenated with a block code such as, for example, a Reed Solomon code. Such coding is well suited to upstream transmission in an interactive satellite communication system.
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patent: 6038696 (2000-03-01), Chouly et al.
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patent: 6161209 (2000-12-01), Moher
patent: 6233709 (2001-05-01), Zhang et al.
patent: 6272183 (2001-08-01), Berens et al.
Brajal Americo
Chouly Antoine
Koninklijke Philips Electronics , N.V.
Tran Khai
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