Invention Grant
US08351547B2 Wireless communication device, wireless communication system, and method for detecting receive timing of direct wave 失效
无线通信装置,无线通信系统以及直接波接收定时检测方法

  • Patent Title: Wireless communication device, wireless communication system, and method for detecting receive timing of direct wave
  • Patent Title (中): 无线通信装置,无线通信系统以及直接波接收定时检测方法
  • Application No.: US12798301
    Application Date: 2010-03-31
  • Publication No.: US08351547B2
    Publication Date: 2013-01-08
  • Inventor: Tetsuhiko Miyatani
  • Applicant: Tetsuhiko Miyatani
  • Applicant Address: KR Suwon-si
  • Assignee: Samsung Electromnics Co., Ltd.
  • Current Assignee: Samsung Electromnics Co., Ltd.
  • Current Assignee Address: KR Suwon-si
  • Priority: JP2009-085194 20090331
  • Main IPC: H03K9/00
  • IPC: H03K9/00
Wireless communication device, wireless communication system, and method for detecting receive timing of direct wave
Abstract:
A wireless communication device and method are capable of detecting a receive timing of a direct wave at higher precision without increasing transmit power. A signal receiver receives a signal having a center frequency changed in a predetermined rule at predetermined time intervals. A time-frequency transformer transforms the received signal from a time domain to a frequency domain. A filter removes frequency-domain signal components unused during reception, based on the predetermined rule, from the frequency-domain signal. A reverse modulator performs a reverse modulation process on the remaining signal components. A signal adder generates an added signal by performing accumulative addition on the signal components that underwent the reverse modulation process in the reverse modulator for a predetermined period. A direct wave arrival time determiner determines an arrival time of a direct wave according to an impulse response obtainable from an output of the frequency-time transformer.
Information query
Patent Agency Ranking
0/0