Invention Grant
US08175136B2 Noise cancellation method, receiver circuit, and electronic instrument
有权
噪声消除方法,接收机电路和电子仪器
- Patent Title: Noise cancellation method, receiver circuit, and electronic instrument
- Patent Title (中): 噪声消除方法,接收机电路和电子仪器
-
Application No.: US12171655Application Date: 2008-07-11
-
Publication No.: US08175136B2Publication Date: 2012-05-08
- Inventor: Kazumi Matsumoto
- Applicant: Kazumi Matsumoto
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors, LLP
- Priority: JP2007-186581 20070718
- Main IPC: H04B1/707
- IPC: H04B1/707 ; H04B1/04 ; H04B1/10 ; H04L25/08

Abstract:
A noise cancellation method includes: inputting an interference wave signal detected near a receiver section, and changing the phase and the amplitude of the input signal to generate a cancellation signal that cancels the input signal; performing correlation calculations on a signal obtained by adding the cancellation signal to a communication signal received by the receiver section and a code replica of a PRN code used for the communication signal, within a given correlation calculation target range that is included within a code phase range and a frequency range; and performing the correlation calculations within a non-signal range outside the correlation calculation target range, and controlling a phase shift amount and an amplitude change rate of the input signal based on the correlation calculation result.
Public/Granted literature
- US20090022210A1 NOISE CANCELLATION METHOD, RECEIVER CIRCUIT, AND ELECTRONIC INSTRUMENT Public/Granted day:2009-01-22
Information query