发明授权
US08885736B2 Systems and methods for positioning and messaging of reserved tones for peak-to-average ratio (PAR) reduction in DSL systems
有权
DSL系统峰均平均比(PAR)降低的定位和消息传送的系统和方法
- 专利标题: Systems and methods for positioning and messaging of reserved tones for peak-to-average ratio (PAR) reduction in DSL systems
- 专利标题(中): DSL系统峰均平均比(PAR)降低的定位和消息传送的系统和方法
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申请号: US12138657申请日: 2008-06-13
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公开(公告)号: US08885736B2公开(公告)日: 2014-11-11
- 发明人: Rahul Garg , Patrick Duvaut , Amitkumar Mahadevan , Harish Jethanandani
- 申请人: Rahul Garg , Patrick Duvaut , Amitkumar Mahadevan , Harish Jethanandani
- 申请人地址: US CA Fremont
- 专利权人: Ikanos Communications, Inc.
- 当前专利权人: Ikanos Communications, Inc.
- 当前专利权人地址: US CA Fremont
- 代理机构: Pillsbury Winthrop Shaw Pittman LLP
- 主分类号: H04K1/10
- IPC分类号: H04K1/10 ; H04L27/28 ; H04M11/06
摘要:
Systems and methods for reducing the peak-to-average ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a time-domain compensation signal which reduces the magnitude of peaks in the time-domain signal prior to transmission where the time-domain compensation signals use tones that are reserved for the purpose of reducing the PAR. The reservation of these reserved tones for PAR can be implemented by altering the typical startup procedures in a digital subscriber line (xDSL) system. The use of the reserved tones to reduce the PAR can be implemented using a low complexity algorithm or using an adaptive technique.
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