Invention Grant
- Patent Title: Peak factor reduction device and wireless transmitter
- Patent Title (中): 峰值因数降低装置和无线发射器
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Application No.: US14190533Application Date: 2014-02-26
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Publication No.: US09031144B2Publication Date: 2015-05-12
- Inventor: Kazuyuki Hori , Yuuji Ishida , Qian He
- Applicant: Hitachi, Ltd.
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Volpe and Koenig, P.C.
- Priority: JP2013-046168 20130308
- Main IPC: H04K1/10
- IPC: H04K1/10 ; H04B1/04
Abstract:
To satisfy the required SNR values for each system and/or each channel, a peak factor reduction device for reducing peak components included in a transmission signal, generates a cancellation signal to be multiplexed on the transmission signal, and the peak factor reduction device changes an amplitude of the generated cancellation signal according to a signal noise ratio required for the transmission signal and a power level of the transmission signal.
Public/Granted literature
- US20140254718A1 PEAK FACTOR REDUCTION DEVICE AND WIRELESS TRANSMITTER Public/Granted day:2014-09-11
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