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

摘要

A method is provided for fault diagnosis of a receive path in a CDMA digital cellular base station system. The receive path includes a receive front-end stage, a transceiver unit stage and an IF amplify & divide unit stage. The method includes the steps of connecting the 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 level, establishing a criterion for diagnosing a fault in the RF receiver path and determining whether a fault occurs in one 8 the receive front-end stage, the transceiver unit and the IF amplify & divide unit stage, respectively.