Patent ID: 6765894
Filing Date: 2004-07-20
Classification: H04B,H04J,H04L

Abstract:
A communication terminal apparatus comprising:a creator for creating a transmission signal by multiplexing at least two known reference signals for one channel; and a transmitter for transmitting the created transmission signal, wherein: the creator creates the transmission signal by code-multiplexing the two known reference signals, specified by a base station apparatus from among a plurality of mutually different known reference signals, for the one channel at the same time, and the creator uses, as the two known reference signals, one of first codes created by extracting a predetermined length from points to which a reference point in a first cyclic reference code is shifted sequentially in either direction and one of second codes created by extracting said predetermined length from points to which a reference point in a second cyclic reference code is shifted sequentially in the opposite direction.