Method and means for transmultiplexing signals between signal te

Details Method and means for transmultiplexing signals between signal te Method and means for transmultiplexing signals between signal te

1992-10-26

1995-03-07

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 70, 370123, 375350, 36472401, 3647241, 36472413, H04J 400

Patent

active

053964896

ABSTRACT:
A method and apparatus are provided of transmultiplexing a plurality of signals between a plurality of signal terminals (17 or 29) and a plurality of selected radio frequency channels. The method includes the step of, and apparatus for, frequency translating and filtering the plurality signals between the plurality of selected channels and a polyphase discrete Fourier transform filter bank (16 or 21) within a comb filter (15 or 22). The method further includes the step of frequency division multiplexing the plurality of signals between the plurality of signal terminals and comb filter (15 or 22) within a polyphase discrete Fourier transform filter bank (16 or 21).

REFERENCES:
patent: 4316282 (1982-02-01), Macina
patent: 4785447 (1988-11-01), Ichiyoshi
patent: 4881191 (1989-11-01), Morton
IEEE Transactions on Communications, vol. COM-22 No. 9, Sep. 1974, "TDM-FDM Transmultiplexer: Digital Polyphase and FFT", Bellanger et al.

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