COMMUNICATION DEVICE AND COMMUNICATION METHOD

摘要

A despreading unit carries out despreading of the received signal with a spreading code unique to a mobile station device. A switch judges on the basis of the correlation level of the despread signal for each mobile station device whether it outputs a channel estimate determined for each mobile station device to a reset unit or JD unit. The JD unit carries out joint detection calculation using the channel estimate from the reset unit or the channel estimate from the switch and generates a matrix used for performing interference elimination of the received signal. The received signal delayed by a predetermined time is multiplied by the matrix from the JD unit, and thus data from which interference is eliminated is obtained for each mobile station device.