Method and apparatus for interfacing digital and analog carrier

Details Method and apparatus for interfacing digital and analog carrier Method and apparatus for interfacing digital and analog carrier

1976-04-15

1977-03-22

Cooper, William C.

179 15A, 179 15BM, H04J 100

Patent

active

040138429

ABSTRACT:
Apparatus for interconnecting a time-division multiplex carrier system, such as T1, with a frequency-division multiplex carrier system, such as LMX-3. The interconnexion is effected in an all digital manner by the use of digital filters, thus avoiding the necessity of down-converting either system to voiceband.

REFERENCES:
patent: 3328528 (1967-06-01), Darlington
IEEE Transactions on Circuit Theory, vol. CT-17, No. 3, Aug. 1970, "On Digital Single-Sideband Modulators", by S. Darlington, pp. 409-414.
IEEE Transactions on Communication Technology, vol. COM-19, No. 1, Feb. 1971, "SSB/FDM Utilizing TDM Digital Filters", by C. F. Kurth, pp. 63-71.

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