Method for fault diagnosis of a RF receive path in a CDMA digita

Details Method for fault diagnosis of a RF receive path in a CDMA digita Method for fault diagnosis of a RF receive path in a CDMA digita

1998-07-02

2000-07-25

Le, Thanh Cong

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455 674, H04Q 700

Patent

active

06094577&

ABSTRACT:
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.

REFERENCES:
patent: 5481186 (1996-01-01), Heutmaker et al.
patent: 5640401 (1997-06-01), Yamada
patent: 5930707 (1999-07-01), Vambaris et al.
patent: 5943617 (1999-08-01), Nakamura

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