| 摘要 |
For a specific antenna installation the variables of temperature, frequency and length affect the performance of the installation. Most of these variables can be taken into account by specific circuitry, but batch to batch variations at the antenna cannot be taken into account, since these variables tend to be outside the dynamic range of the base station. These have to be monitored on an individual basis, and are taken into account on installation. In accordance with the present invention,there is provided a base station arrangement 10 comprising an antenna 12 with adjacently located amplifiers 18, wherein the noise of an amplifier on one channel can be monitored as a signal source and compared with a reference value, whereby signal loss associated with the arrangement can be compensated. A method of calibrating the receive electronics of a base station arrangement, wherein the arrangement comprises an antenna with an adjacently located receive amplifier and remotely located electronic control means is also disclosed. <IMAGE> |
