Invention Grant
US08908810B2 Systems and methods for implementing soft-decision Reed-Solomon decoding to improve cable modem and cable gateway performance
有权
用于实现软判决Reed-Solomon解码以提高电缆调制解调器和电缆网关性能的系统和方法
- Patent Title: Systems and methods for implementing soft-decision Reed-Solomon decoding to improve cable modem and cable gateway performance
- Patent Title (中): 用于实现软判决Reed-Solomon解码以提高电缆调制解调器和电缆网关性能的系统和方法
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Application No.: US13728022Application Date: 2012-12-27
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Publication No.: US08908810B2Publication Date: 2014-12-09
- Inventor: Bernard Arambepola , Murat Badem , Parveen K. Shukla , Sahan Gamage , Thushara Hewavithana , Naor Goldman
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Prass LLP
- Agent Ellis B. Ramirez
- Main IPC: H04L27/38
- IPC: H04L27/38 ; H04L27/06 ; H04L1/00
Abstract:
A system and method are provided for implementing a soft Reed-Solomon (RS) decoding scheme, technique or algorithm to improve physical layer performance in cable modems and cable gateways. The algorithm is implemented in a forward error correction (FEC) module connected to a QAM demodulator. The RS decoding scheme is implemented without significantly complicating hardware or processing overhead. The soft Reed-Solomon (RS) decoding scheme extracts candidate RS symbols and their Log Likelihood Ratios (LLRs) from QAM symbols. The set of highest probable candidate blocks are then chosen and these are decoded using a variant of the Chase algorithm until a valid codeword is detected at the decoder output.
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