发明申请
US20090310704A1 Low Complexity Systems and Methods for Peak-to-Average Ratio (PAR) Reduction Using Reserved Tones
有权
低复杂度系统和使用保留音调的峰值平均比(PAR)减少的方法
- 专利标题: Low Complexity Systems and Methods for Peak-to-Average Ratio (PAR) Reduction Using Reserved Tones
- 专利标题(中): 低复杂度系统和使用保留音调的峰值平均比(PAR)减少的方法
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申请号: US12138813申请日: 2008-06-13
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公开(公告)号: US20090310704A1公开(公告)日: 2009-12-17
- 发明人: Harish Jethanandani , Rahul Garg , Patrick Duvaut , Amitkumar Mahadevan
- 申请人: Harish Jethanandani , Rahul Garg , Patrick Duvaut , Amitkumar Mahadevan
- 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: H04L27/00
- IPC分类号: H04L27/00
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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