Invention Grant
- Patent Title: Pulse cancellation crest factor reduction with a low sampling rate
- Patent Title (中): 脉冲消除波峰因数降低采样率低
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Application No.: US14682737Application Date: 2015-04-09
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Publication No.: US09313078B1Publication Date: 2016-04-12
- Inventor: Kaushik Barman , Gregory C. Copeland
- Applicant: Xilinx, Inc.
- Applicant Address: US CA San Jose
- Assignee: XILINX, INC.
- Current Assignee: XILINX, INC.
- Current Assignee Address: US CA San Jose
- Agent W. Eric Webostad
- Main IPC: H04K1/02
- IPC: H04K1/02 ; H04L27/36 ; H04L27/04 ; H04L27/12
Abstract:
A method relates generally to data transmission. In such a method, a peak detector detects a signal peak of an input signal exceeding a threshold amplitude. This detecting includes sampling the input signal at a sampling frequency to provide a sampled signal. The sampling frequency is in a range greater than a bandwidth frequency of a carrier signal used for providing the input signal and less than twice the bandwidth frequency. Samples of the sampled signal proximate to the signal peak are interpolated to provide a reconstructed peak. A cancellation pulse is applied by a cancellation pulse generator to the samples to reduce the signal peak. A version of the input signal is output after application of the cancellation pulse.
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