发明授权
US08275067B2 Adaptive turbo peak mitigation for peak-to-average ratio (PAR) reduction using reserved tones
有权
使用预留音调的峰值平均比（PAR）降低的自适应turbo峰值缓解
- 专利标题： Adaptive turbo peak mitigation for peak-to-average ratio (PAR) reduction using reserved tones
- 专利标题（中）： 使用预留音调的峰值平均比（PAR）降低的自适应turbo峰值缓解
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申请号： US12139146申请日： 2008-06-13
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公开(公告)号： US08275067B2公开(公告)日： 2012-09-25
- 发明人: Rahul Garg , Patrick Duvaut , Harish Jethanandani , Amitkumar Mahadevan
- 申请人： Rahul Garg , Patrick Duvaut , Harish Jethanandani , Amitkumar Mahadevan
- 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
- 代理商 Mark J. Danielson
- 主分类号： H04L27/04
- IPC分类号： H04L27/04 ; H04L27/36 ; H04B1/38
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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