| 摘要 |
The embodiment of the invention discloses a pre-coding method, a pre-decoding method, a transmitter and a mobile terminal based on interference alignment. The method comprises steps of: computing an antenna mapping matrix according to a downlink channel state information, wherein the antenna mapping matrix is used for antenna mapping for the current transmitter so as to perform an interference alignment algorithm; computing a multi-cell pre-coding matrix according to the downlink channel state information and the antenna mapping matrix; computing a single cell multi-user pre-coding matrix; and pre-coding user data using the single cell multi-user pre-coding matrix and the multi-cell pre-decoding matrix and performing an antenna mapping using the antenna mapping matrix. According to the embodiment of the invention, a system which cannot use the interference alignment method directly may be transformed into a system which can use the interference alignment method directly. In addition, the interference suppression between cells and the interference management inside cells are two separate processes, in which different linear pre-coding and decoding methods may be used. |
