DEVICE FOR ESTIMATING CHANNEL, METHOD FOR ESTIMATING CHANNEL, BASE STATION, AND COMMUNICATION SYSTEM

摘要

A channel estimation device (130) includes a reception unit (131), a first estimation unit (132), and a second estimation unit (133). The reception unit (131) receives reference signal groups (111, 121) which are transmitted from base stations (110, 120) and which include some reference signals assigned the same channel resources. The first estimation unit (132) estimates the reference signals in the reference signal group (111) assigned the same channel resource according to the reference signals in the reference signal group (111) not assigned the same channel resource. The second estimation unit (133) estimates the reference signals in the reference signal group (121) assigned the same channel resource according to the reference signals estimated by the first estimation unit (132).