| 摘要 |
In a decision feedback equalizer, symbols from an array of antennas (101-10N) are fed to a first filter (12) where they are respectively multiplied with first weight coefficients and supplied to a combiner (15) where they are combined with second symbols to produce a combined symbol. A decision circuit (16) makes a decision on the combined symbol and produces a decision symbol. Decision symbols successively generated by the decision circuit are fed to a second filter (18) where they are respectively multiplied with second weight coefficients and supplied to the combiner (15) as the second symbols. A difference between the decision symbol and the combined symbol is detected to produce a decision error. Each of the first weight coefficients is updated according to the decision error and the symbol from each of the antenna systems and each of the second weight coefficients is updated according to the decision error and each of the decision symbols successively-supplied from the decision circuit so that the mean square value of the decision error is reduced to a minimum. <IMAGE> |
