Patent ID: 6853631
Filing Date: 2005-02-08
Classification: H04B,H04J,H04L

Abstract:
1. A receiving apparatus used in code-division multiplex communications where a plurality of data series are despread using a plurality of spreading codes and are received, wherein the plurality of data series are classified into two groups, and a phase of a carrier modulating one group of data series and a phase of a carrier modulating the other group of data series are set to 0 degrees and a prescribed phase value other than 0, respectively, comprising: a despreading unit despreading received signals; a pilot signal extraction unit extracting a pilot signal from an output signal of the despreading unit; a channel estimation unit calculating a channel estimation value based on the pilot signal; a phase difference information storage unit storing information about a phase difference between a carrier for information about the pilot signal and a carrier for information about the pilot signal and a carrier for a data signal outputted from the despreading unit in the channel estimation value; and a decision unit deciding a signal value of the data signal based on a process result of the data signal using both the channel estimation value and the phase difference information.