System for performing propagation channel estimation by cooperation between base stations

A system comprising a plurality of base stations for performing radio communications with a terminal, the system comprising:

• a signal transportation means for transporting a reception signal received by an antenna section of the base station, between the plurality of the base stations;
• and
• a base-station cooperative network for transporting information of propagation channels between the terminal and the plurality of the base stations, and
• wherein each of the plurality of the base stations comprises:
• an antenna section;
• a transmitter for performing a process of transmitting a transmission signal from the antenna section;
• a first receiver for processing a reception signal received by the antenna section;
• one or two or more second receivers, each receiver processing a reception signal received by an antenna section of each of one or two or more surrounding base stations and transferred via the signal transportation means;
• and
• an estimation section for estimating information of propagation channels between an own cell terminal and the plurality of the base stations, based on a reception result of a base-station specific signal received by the first receiver from the own cell terminal and a reception result of base-station specific signals received by the one or two or more second receivers from the own cell terminal.