发明申请
- 专利标题: Cognitive and Universal Impulse Noise Protection
- 专利标题(中): 认知和通用脉冲噪声保护
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申请号: US12348763申请日: 2009-01-05
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公开(公告)号: US20090177938A1公开(公告)日: 2009-07-09
- 发明人: Julien D. Pons , Patrick Duvaut , Massimo Sorbara , Yue-Peng Zheng
- 申请人: Julien D. Pons , Patrick Duvaut , Massimo Sorbara , Yue-Peng Zheng
- 申请人地址: US CA Newport Beach
- 专利权人: CONEXANT SYSTEMS, INC.
- 当前专利权人: CONEXANT SYSTEMS, INC.
- 当前专利权人地址: US CA Newport Beach
- 主分类号: H04L1/18
- IPC分类号: H04L1/18
摘要:
Impulse noise from nearby or intense electrical sources can disrupt communications over digital subscriber lines. There are many methods to deal with errors produced by impulse noise sources. Forward error correction (FEC) codes such as Reed Solomon coding along with scrambling and interleaving are used to correct small errors. However, for larger errors, retransmission is favored. Retransmission can be applied at the Discrete Multi-tone symbol level thus eliminating the need to insert sequence identification into data transmission units, furthermore retransmission can also be employed to exploit the error correcting capabilities of the FEC codes. Finally, an impulse noise protection system can exploit impulse noise statistics to configure the redundancy in the FEC codes and to enable the use of blanking. Exemplary embodiments of systems described can cooperatively use impulse noise statistics to utilize retransmission, FEC and blanking to mitigate the effects of impulse noise.
公开/授权文献
- US08112687B2 Systems and methods for mitigating impulse noise 公开/授权日:2012-02-07
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