FDM-TDM transmultiplexing system

Details FDM-TDM transmultiplexing system FDM-TDM transmultiplexing system

1986-09-10

1988-07-19

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04J 105

Patent

active

047590130

ABSTRACT:
An FDM-TDM transmultiplexing system for a modulation/demodulation device which is applicable to a regenerative repeating system of a satellite or a ground radio communication system is disclosed which uses chirp-z-transform. A chirp filter is implemented with a digital circuit. The circuit scale of the digital chirp filter increases in proportion to a square root of the total number of channels N, enhancing miniaturization of an FDM-TDM transmultiplexer.

REFERENCES:
patent: 3676598 (1972-07-01), Kurth
patent: 3875340 (1975-04-01), Roy et al.
patent: 4312062 (1982-01-01), Bellanger et al.
patent: 4412325 (1983-10-01), Molo
Bellanger et al., "TDM-FDM Transmultiplexer: Digital Polyphase and FFT", 9/74; IEEE Trans. on Comm.; pp. 1199-1205; vol. com-22, No. 9.

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