Cochannel interference measurement system

Details Cochannel interference measurement system Cochannel interference measurement system

1983-10-14

1985-12-24

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

324 57N, H04B 1700

Patent

active

045611149

ABSTRACT:
In radio communication system using angular modulation, the presence and quantity of cochannel interference is detected. According to the invention, when desired signal and undesired signal are received simultaneously, an envelope of the received IF output signal involves low frequency spectrum component similar to that of fading and high frequency spectrum component with several KHz. The low frequency spectrum component and high frequency spectrum component are then calculated, and the interference ratio D/U is obtained by processing said components.

REFERENCES:
patent: 4085370 (1978-04-01), Van Der Poel et al.
patent: 4124818 (1978-11-01), Lin et al.

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