| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wireless communication system that, in a multi-user MIMO, suppresses superimposed interference components resulting from channel fluctuations and channel estimation errors when interference cancellation is performed in advance in a base station unit on a modulated signal that is being transmitted. <P>SOLUTION: A base station device 10 includes an interference cancellation coefficient extractor 30, which extracts an interference cancellation coefficient from a signal received from a first terminal device to cancel interference on the propagation channel with the first terminal device in advance, and transmits a pilot signal that contains information related to the interference cancellation coefficient to a second terminal device. In addition, the base station device 10 also includes an interference cancellation unit 16, which uses the interference cancellation coefficient to cancel the interference component from transmission data to be transmitted over the same channel, and transmits the transmission data, from which the interference component has been canceled by the interference cancellation unit 16, to the first terminal device and second terminal device over the same channel. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
