| 摘要 |
PROBLEM TO BE SOLVED: To reduce errors in demodulation, and at the same time, to eliminate instability in weight. SOLUTION: A weight control section 5 of a first reception system updates and outputs the weights W11,..., W1n with which signal data D1,..., Dn of each antenna element are multiplied for each symbol, so that the value of error data De indicating the difference between demodulation pilot data and known data Dp is minimized. An optimum weight selection means 10 of a second reception system stores the weight W11,..., W1n, outputted from the weight control section 5 of the first reception system in units of slots for selecting the optimum weight in units of slots. The second reception system gives specific delays to the signal data of each antenna element at a delay section 6, and the optimum weight selected by the optimum weight selection means 10 is multiplied at a multiplication section 7, combines the multiplication output at a combining section 8, and performs demodulation for outputting demodulation data Do.
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