发明授权
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

Noise cancellation method, receiver circuit, and electronic instrument
摘要:
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.
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