| 摘要 |
<p>In a transceiver unit in which the information is encoded in a plurality of levels, a update unit for an adaptive or equalizer filter unit includes apparatus (51-56) for forming product of error signals and data signals without using a multiplier unit. The plurality of levels is represented by a logic signal format (b2,b1,b0) for five signal levels. The components of the logic signal format (b2,b1,b0) provide the control signals which process the error signals in such a manner as to provide the appropriate product. The only arithmetic unit is an adder unit (56) needed to combine the previous coefficient Wn,t-1 with the product generated by the apparatus (51-56). <IMAGE></p> |
