| 摘要 |
PURPOSE: An estimator for an indirect signal between base stations, is provided easily to estimate affects of the indirect signal and insulation between the base stations, by testing and analysing the affects of the indirect signal causing a mutual interruption between neighboring base stations, through a testing cellular phone. CONSTITUTION: An estimator for an indirect signal between base stations comprises a directional combiner(11,12), a path controller(13), and a base station tester(14). The directional combiner(11,12) is connected to transmitting/receiving antenna, and determines a transmitting/receiving indirect signal and a path of an estimated signal to the indirect signal forward or backward. The path controller(13) connects the directional combiner(11,12) and the base station tester(14) to an active network. The base station tester(14) is built-in a testing cellular phone in order to analyse affects of an indirect signal by the neighboring base station, after analysing such as a power level and a frame error through monitoring received data of the cellular phone, according to an access of the path controller(13).
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