| 摘要 |
<p>A multi-user CDMA (Code Division Multiple Access) interference canceller includes a coefficient output section (104, 105) and a plurality of stages (STAGE 1 to 3). The coefficient output section dynamically determines a weight coefficient based a reception state of each of a plurality of user signals of a reception signal. Each of the plurality of stages other than the last stage includes a first interference estimating section (101, 102) and a synthesizing unit (103). The first interference estimating section is provided for each of the plurality of user signals. Also, the first interference estimating section outputs a symbol replica for a next stage and a user reproduction signal for the corresponding user signal based on a symbol replica received from a previous stage, an input signal and a weight coefficient for the corresponding user signal. The synthesizing unit outputs a residual signal for the next stage based on the input signal and the user reproduction signals. The last stage includes a second interference estimating section (101) provided for each of the plurality of user signals. The second interference estimating section outputs a final user reproduction signal based on the symbol replica from the previous stage for the corresponding user signal and the input signal. <IMAGE></p> |
