A method and system of fault diagnosis of an rf receive path in a digital communication system

摘要

In a method of fault diagnosis of a receive path in a digital communication system such as a CDMA digital cellular system, the receive path comprises a receive front end stage, a transceiver unit stage and an IF amplify and divider unit stage. The method includes the steps of connecting a RF receive path to a base station test unit, supplying a transmit signal of a test mobile station unit installed in the base station test unit to the RF receive path, measuring a receiver signal power level, establishing a criterion for diagnosing a fault in the receive path and determining whether a fault occurs in the receive front end stage, the transceiver unit and the IF amplify and divider unit stage respectively.