| 摘要 |
<p>A method of characterising a radio frequency traffic channel comprising a transmitter and a receiver is disclosed. The method comprises: (a) sending a sequence of bits from the transmitter to the receiver at a first amplitude; (b) measuring which of said bits are accurately received by the receiver; (c) calculating an error rate of the radio frequency traffic channel based on the bits received; (d) using the calculated error rate to calculate a second amplitude which differs from the first amplitude by a first difference; (e) sending a further sequence of bits from the transmitter at said second amplitude and measuring which are accurately received in order to calculate a new error rate; (f) comparing the new error rate to a target error rate in order to determine whether the new error rate differs from the target error rate by more than a predetermined amount; and (g) if the new error rate differs from the target error rate by more than the predetermined amount, calculating a third amplitude, which differs from the first amplitude by a second difference which is smaller than the first difference; or (h) if the new error rate differs from the target error rate by less than the predetermined amount, calculating a third amplitude which differs from the second amplitude by a second difference which is calculated using the new error rate.</p> |
