| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a despreader which can be made into flexible module without considerably complicating the configuration of hardware. <P>SOLUTION: A despreader comprises a filtering means 61 which generates a demodulation signal by applying predictive processing and despreading processing to a spread signal formed by sampling, in a baseband region, a reception wave of a direct spreading system at a frequency of a double or more chip rate of a spreading code; and a control means 62 which obtains a product of a transmission function indicating filtering characteristics to be applied to the predictive processing and a despreading code to be applied to the despreading processing and gives that product to the filtering means 61 as a transmission function of that filtering means. <P>COPYRIGHT: (C)2007,JPO&INPIT |
