| 摘要 |
The distance between a first Multi Band Orthogonal Frequency Division Multiplex (MB-OFDM) data transceiver (106) and a second or more such transceiver (110, 114) is determined using known techniques. The radio frequency path loss between transceivers is estimated given that distance, using a known relationship between distance and path loss, and further accounting for line-of-sight or non-line-of-sight conditions, if desired. This path loss value is added to the typically minimum transmit power level, absent path loss, needed for reliable data communication. This modified initial transmit power level is then used by the first transceiver to begin the known iterative feedback process of transmit power control (TPC). Because this modified initial transmit power level, based on distance, is closer to the final optimum level, convergence in the TPC process occurs in fewer steps and less time than had the initial transmit power been maximum power, as is typical in known TPC systems. |
