发明授权
US6154487A Spread-spectrum signal receiving method and spread-spectrum signal receiving apparatus 失效
扩展频谱信号接收方法和扩频信号接收装置

Spread-spectrum signal receiving method and spread-spectrum signal
receiving apparatus
摘要:
A spread-spectrum signal receiving method and apparatus in which a correlation operation is performed for obtaining a correlation between a base-band component of a received spread-spectrum signal and a spread code, so as to demodulate the received signal. In the method, a correlation operation between the spread code and the base-band component, and a correlation operation at a timing equal to a timing difference between the spread code and the base-band component in the former correlation operation step, the timing difference being 1/2 of a spread-code interval, are performed. Then, based on results obtained in these correlation operations, a correlation operation result at the timing point where a timing difference between the spread code and the base-band component is less than 1/2 of the spread-code interval, is estimated.
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