| 摘要 |
<p>A nonlinear compensating circuit, a base-station apparatus and a transmission power clipping method for executing a clipping operation beneficial against nonlinear characteristics of a high output amplifier at the transmitting end even in the case of multicarrier amplification. A plurality of power converting circuits calculate power values of respective input signals. An adder adds up the calculated power values to obtain a synthetic power value P. A divider divides a predetermined threshold value T by the synthetic power value P. When the divided value T/P is equal to or more than 1, a determining circuit outputs a clip control signal for turning off the clipping operation to a plurality of clipping circuits. On the other hand, when the divided value T/P is less than 1, the determining circuit outputs a clip control signal for turning on the clipping operation, which includes a square root of the divided value T/P obtained by the divider, (T/P) 1/2 , to the clipping circuits.</p> |
