| 摘要 |
<p>The ultra-wideband communication system (10) includes a transceiver (12, 14) configured to receive an ultra-wideband communication signal (33, 35, 38, 40), which has embedded power level data (52, 54, 56, 58). A measurement circuit (27, 29) in the transceiver measures the strength of the received signal. An attenuation factor (15) is computed that compares the measured signal strength to the data embedded in the signal. A feedback circuit uses the attenuation factor to select a power level for a next transmission. In a preferred configuration, the transceiver also has a positioning circuit (25, 31) that is used to accurately determine the distance from the transceiver to the source of the communication signal, and the feedback circuit uses the distance to tune the power level for the next transmission. In another preferred configuration, a bit error rate is used to set power level for the next transmission.</p> |
