| 摘要 |
PURPOSE:To exclude the effect of a transmission filter superimposed on a complex number base band signal by multiplying carrier with a reception signal and applying de-convolution processing to a filter representing inverse characteristic to a reception filter to a complex number base band signal obtained through the reception filter. CONSTITUTION:A de-convolution filtering processing 25 is applied prior to the correction of a complex number base band signal in one symbol rate. In this processing, a complex number base band signal Z(t) is inputted, calculation Z(t) in the de-convolution filtering processing 25 superimposing inverse characteristic of reception filters 2, 4 is implemented and the Z(t) is outputted to a phase correction section 26. Based on the complex number base band signal obtained synchronously with the synchronizing signal, a phase shift (error) in a burst signal from the complex number base band signal by several symbols is estimated by a phase error estimate section 28, a phase correction section 26 applies phase compensation to discriminate a binary data. |
