| 摘要 |
<p>PURPOSE:To suppress an interference wave by estimating an interference wave component included in a signal channel from the sample value of an observing channel and subtracting the estimate value of the interference wave component from the sample value so as to detect the correlation. CONSTITUTION:A signal channel and an observation channel are sampled by a sampler 304 and the sample value of the signal channel is outputted to a delay circuit 309 by an S/D converter 306 and the sample value of an observation channel is outputted to an interpolation estimate device 310. The estimate device 310 interpolates and estimates the interference wave component included in the sample value of the signal channel from the interference wave component sample value of the observation channel. A canceller 313 subtracts the interpolation estimate value of the interference wave component from the sample value of the signal channel and outputs a canceller output 314. A matched filter 315 uses a spread spectrum code series the same as that at a sender side to detect correlation from the output 314. Thus, even when the correlation characteristic is dissident, the interference wave is suppressed.</p> |
