BASE STATION DEVICE AND PROPAGATION PATH ESTIMATE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a propagation path estimate method that can effectively estimate an outgoing line in a wireless communication system where the frequency band for an incoming line and the frequency band for the outgoing line are asymmetrical. SOLUTION: Each communication terminal multiplies a spread code that is known among terminals and different from outgoing data with a pilot symbol with an outgoing line use frequency band (f2) and transmits the resulting symbol to a base station.