MOBILE COMMUNICATION METHOD AND ITS SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve the communication quality of a communication channel and to increase a subscriber capacity of a communication system by providing a plurality of antennas to a base station and sending a different pilot signal to each antenna. SOLUTION: A coding means 0201 encodes audio information and image information or the like addressed to a mobile station 1. A spread means uses a spread code 1 assigned to the mobile station 1 to spread a signal band. The spread signal is connected to a multiplexer means 0213 or 0214 according to an instruction of a selection means 0210 in a changeover means 0207. The information addressed to mobile stations 2, 3 is processed similarly. The selection means 0210 selects an antenna to send a signal of each channel and gives an instruction to changeover means 0207, 0208 or 0209. A pilot signal of an antenna A is spread for a signal band by a spread code assigned to the antenna A by a spread means 0211. The spread pilot signal is multiplexed by a multiplexer 0213 with spread signals of other channels sent from the antenna A.