Multichannel frequency translation of sampled waveforms by decim

Details Multichannel frequency translation of sampled waveforms by decim Multichannel frequency translation of sampled waveforms by decim

1979-11-23

1982-02-16

Stewart, David L.

Multiplex communications

Wide area network

Packet switching

370 50, 370112, H04J 105

Patent

active

043162827

ABSTRACT:
A system and method for frequency division demultiplexing a received broad band signal into k.sup.m channels, each capable of containing a baseband signal component and comprising m descending tiers of identical channel division modules with the first tier thereof comprising a first module responsive to the received broad band signal to divide such broad band signal (at baseband) into k new channels each containing a baseband spectral component. Each module of each tier of modules is constructed to respond individually (by sampling and de-sampling techniques) to the spectral component in individual ones of the channels outputted from the immediately preceding higher order tier of modules to form k new additional channels each containing a baseband spectral component. Each baseband spectral component has an upper bandwidth limit which bears the same ratio to its sampling rate as the upper bandwidth limit of the originally received broad band signal bears to its sampling rate.

REFERENCES:
patent: 3808412 (1974-04-01), Smith
patent: 3875340 (1975-04-01), Roy
patent: 4117541 (1978-09-01), Ali
IEEE Transactions on Communication Technology; vol. Com-19, No. 1; Feb. 1971; "SSB/FOM Utilizing TOM Digital Filter" by Kurth.
Proceedings, IEEE; vol. 123, No. 12, Dec. 1976; "Techniques For The Digital Interfacing of TOM/FOM Systems", by Tomlinson et al.

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