| 摘要 |
A replica signal of a data signal addressed to another reception station is efficiently generated, and an interference cancellation process or an interference suppression process can be performed by using the replica signal. A replica generation unit 232 returns an interference data signal input from a decoding unit 209 to a symbol sequence which is generated by a transmission station before a frequency demapping process. The generated replica symbol sequence is output to an interference cancellation unit 231. The interference cancellation unit 231 subtracts a replica frequency domain signal input from the replica generation unit 232 from a frequency domain signal input from an FFT unit 204 to remove a signal of an undesired reception station. The symbol sequence as the subtraction result is output to a signal demultiplexing unit 206. Two or more types of replica signal generation processes are provided, the replica signal generation process is selected in accordance with a channel state or contents of a data signal reception process, a replica signal is generated by the selected replica signal generation process, and interference cancellation is performed. |
