Measurement of characteristics of broadcast optical networks

Details Measurement of characteristics of broadcast optical networks Measurement of characteristics of broadcast optical networks

1990-07-24

1992-10-20

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

375 10, 359110, H04J 116, H04J 314

Patent

active

051576520

ABSTRACT:
The present invention provides techniques for analyzing sub-carrier multiplexed (SCM) networks in which a pseudo-random binary sequence (PRBS) test signal is applied to a component or components of the network and the resulting signal is analyzed. A phase locked loop circuit extracts the PRBS and provides a signal which removes from the test signal the frequency component corresponding to the channel under investigation. The spectral properties of the PRBS enable broadband analysis of an SCM network to be carried out.

REFERENCES:
patent: 3396240 (1968-08-01), Abbey et al.
patent: 3718813 (1973-02-01), Williams, Jr. et al.
patent: 3875500 (1975-04-01), Fletcher et al.
patent: 4246608 (1981-01-01), Baker
patent: 4377822 (1983-03-01), Noirel et al.
patent: 4384354 (1983-05-01), Crawford et al.

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