Radio loop-back test method and system which are reliable even i

Details Radio loop-back test method and system which are reliable even i Radio loop-back test method and system which are reliable even i

1997-06-16

1999-11-30

Urban, Edward F.

Telecommunications

Transmitter

Measuring, testing, or monitoring of transmitter

455 78, 455425, H04B 138

Patent

active

059958111

ABSTRACT:
In a radio loop-back test system for a radio apparatus in which a transmitter (15) transmits a first radio signal in response to a transmission signal and which a receiver (16) receives a second radio signal to produce a reception signal, a comparing portion (22) compares the reception signal with the transmission signal to produce a comparison result signal. An interference detection portion (23) detects whether or not the reception signal has an interference component unrelated with the first radio signal. The interference detection portion produces an interference detection signal when the reception signal has the interference component. The comparison result signal is controlled by an output control portion (24) in accordance with presence and absence of the interference detection signal.

REFERENCES:
patent: 5442811 (1995-08-01), Kobayashi et al.
patent: 5457812 (1995-10-01), Siira et al.
patent: 5574981 (1996-11-01), Ahonen
patent: 5754560 (1998-05-01), Nousiainen et al.
patent: 5819165 (1998-10-01), Hulkko et al.

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