Invention Grant
- Patent Title: Wireless device and wireless access system
- Patent Title (中): 无线设备和无线接入系统
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Application No.: US14664303Application Date: 2015-03-20
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Publication No.: US09444499B2Publication Date: 2016-09-13
- Inventor: Junya Morita , Yousuke Okazaki , Yoshinobu Shizawa
- Applicant: FUJITSU LIMITED
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Arent Fox LLP
- Priority: JP2014-070337 20140328
- Main IPC: H04K1/02
- IPC: H04K1/02 ; H04L25/03 ; H04L25/49 ; H04B1/04

Abstract:
A wireless device includes a digital-to-analog converter that converts a digital transmission signal within a digital signal processing band to an analog transmission signal, a modulator that performs quadrature modulation of an analog transmission signal obtained by the digital-to-analog converter using a first local signal having a first frequency outside a frequency range, the frequency range centered around a center frequency of a transmission signal and having a bandwidth of the digital signal processing band, and outputs a modulated signal, a frequency converter that performs a frequency shift of a modulated signal output from the modulator using a second local signal having a second frequency within the frequency range, and an inhibitor that performs carrier leakage inhibition processing on the digital transmission signal, based on a signal obtained by the frequency converter.
Public/Granted literature
- US20150280756A1 WIRELESS DEVICE AND WIRELESS ACCESS SYSTEM Public/Granted day:2015-10-01
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