Source: http://www.google.com/patents/US7809996?dq=6246862
Timestamp: 2014-04-19 20:49:46
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Matched Legal Cases: ['Application No. 04801294', 'Application No. 2004298118', 'Application No. 2004298118', 'Application No. 200480040960', 'Application No. 04801294', 'Application No. 04801294', 'Application No. 200480040960']

Patent US7809996 - Adaptive FEC codeword management - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAdaptive FEC coding is used to adjust the codeword composition of FEC codewords in a communication system. A codeword composition ratio may be adjusted in response to variance of a measured transmission error value from a target transmission error value in the system. The codeword composition ratio may...http://www.google.com/patents/US7809996?utm_source=gb-gplus-sharePatent US7809996 - Adaptive FEC codeword managementAdvanced Patent SearchPublication numberUS7809996 B2Publication typeGrantApplication numberUS 12/185,729Publication dateOct 5, 2010Filing dateAug 4, 2008Priority dateDec 7, 2003Also published asCA2548743A1, CN1906879A, CN1906879B, CN101841389A, DE602004026918D1, EP1700410A1, EP1700410B1, US7428669, US20050138524, US20090086800, WO2005057837A1Publication number12185729, 185729, US 7809996 B2, US 7809996B2, US-B2-7809996, US7809996 B2, US7809996B2InventorsJohn M. CioffiOriginal AssigneeAdaptive Spectrum And Signal Alignment, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (53), Non-Patent Citations (66), Referenced by (8), Classifications (64), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetAdaptive FEC codeword managementUS 7809996 B2Abstract Adaptive FEC coding is used to adjust the codeword composition of FEC codewords in a communication system. A codeword composition ratio may be adjusted in response to variance of a measured transmission error value from a target transmission error value in the system. The codeword composition ratio may be any quantity or value that represents the relation between the payload and parity bytes in the applicable FEC coding scheme. Adjustment of the codeword composition ratio may be adjusting parameters such as the N, K and/or R values in ADSL1 systems or the INP and/or maximum interleaving delay values in ADSL2 systems. A controller may be used to monitor, analyze and adjust the various values used in adaptively managing FEC coding. The present invention may be implemented in a transmission system in which a transmitter transmits data to a receiver via a transmission channel, such as a DSL system.
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