Invention Grant
- Patent Title: Systems and methods for transmit-only peak-to-average ratio reduction in the oversampled regime using reserved tones
- Patent Title (中): 使用保留色调的过采样方案中仅发送峰到峰比降低的系统和方法
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Application No.: US12138731Application Date: 2008-06-13
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Publication No.: US07974181B2Publication Date: 2011-07-05
- Inventor: Amitkumar Mahadevan , Patrick Duvaut , Harish Jethanandani , Rahul Garg
- Applicant: Amitkumar Mahadevan , Patrick Duvaut , Harish Jethanandani , Rahul Garg
- Applicant Address: US CA Fremont
- Assignee: Ikanos Communications, Inc.
- Current Assignee: Ikanos Communications, Inc.
- Current Assignee Address: US CA Fremont
- Agency: Thomas, Kayden, Horstemyer & Risley, LLP
- Main IPC: H04J11/00
- IPC: H04J11/00
Abstract:
Systems and methods for reducing the peak-to-average power 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 in the oversampled regime, using tones reserved for PAR reduction. A set of vectors corresponding to PAR tones is generated by processing out-of-phase symbols for each PAR tone to form a span matrix. The span matrix is used to find a best fit of a desired target signal to a time-domain compensation signal comprising only PAR tones.
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