Invention Grant
- Patent Title: Method and system for adaptive peak to average power ratio reduction in orthogonal frequency division multiplexing communication networks
- Patent Title (中): 正交频分复用通信网络中自适应峰均功率比降低的方法和系统
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Application No.: US13687576Application Date: 2012-11-28
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Publication No.: US08842757B2Publication Date: 2014-09-23
- Inventor: Ning Guo , Neil McGowan , Bradley John Morris
- Applicant: Apple, Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Main IPC: H04K1/10
- IPC: H04K1/10 ; H04L27/26
Abstract:
A method and system adaptively reduce a peak-to-average power ratio in a communication system. Energy is clipped from at least one peak of a modulated signal. The modulated signal includes a plurality of sub-carriers. At least one data sub-carrier is adaptively selected for peak-to-average power ratio reduction use based on known scheduling information. The clipped energy is distributed among at least one data sub-carrier.
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