Invention Grant
US07675982B2 Method and system for reducing peak-to-average power for OFDM signals
失效
降低OFDM信号峰均功率的方法和系统
- Patent Title: Method and system for reducing peak-to-average power for OFDM signals
- Patent Title (中): 降低OFDM信号峰均功率的方法和系统
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Application No.: US11287669Application Date: 2005-11-28
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Publication No.: US07675982B2Publication Date: 2010-03-09
- Inventor: Jinyun Zhang , Xiaozhou Huang
- Applicant: Jinyun Zhang , Xiaozhou Huang
- Applicant Address: US MA Cambridge
- Assignee: Mitsubishi Electric Research Laboratories, Inc.
- Current Assignee: Mitsubishi Electric Research Laboratories, Inc.
- Current Assignee Address: US MA Cambridge
- Agent Dirk Brinkman; Gene Vinokur
- Main IPC: H04L27/28
- IPC: H04L27/28 ; H04L25/49
Abstract:
The invention provides a system and method for effectively reducing peak-to-average power ratio (PAPR) in an OFDM signal. The method includes the steps of oversampling a signal in the time domain, gradually clipping an amplitude of the signal to a predefined level using a formula involving a hyperbolic tangent, bandpass filtering out-of-band spectral components of the signal due to non-linear clipping to be within a predetermined mask, and transmitting the signal.
Public/Granted literature
- US20070121483A1 Method and system for reducing peak-to-average power for OFDM signals Public/Granted day:2007-05-31
Information query
