| 摘要 |
PROBLEM TO BE SOLVED: To separate and compose plural desired signals that arrive in different directions at the same time by providing each adaptive receiving means with plural adaptive receiving parts and preparing directivity for every desired signal component in the different directions at different and the same times. SOLUTION: Delaying devices 2-2 to 2-M adaptively delay an antenna receiving signal so that desired signal components arriving at different times can simultaneously be received by receiving means 3-1 to 3-M. When communication is started for the first time, an arrival direction can not be estimated because adaptive receiving weight is not inputted to an arrival direction estimating means and selection beam weight to the arrival direction which is obtained by a beam selecting means is selected by a selecting means and is sent to an adaptive updating means of an adaptive receiving part. Here, because a receiving weight controlling means 32-1 gives selection beam receiving weight that is receiving weight which is close to an optimum value as an initial value to the adaptive updating means, the convergence of the receiving weight to the optimum value of adaptive updation is made fast. |
