Single side band multiplex signal radio relay

Details Single side band multiplex signal radio relay Single side band multiplex signal radio relay

1977-05-09

1979-01-09

Griffin, Robert L.

325 5, H04B 714

Patent

active

041340698

ABSTRACT:
A radio relay for transmitting single side band (SSB) multiplex signals is disclosed. The receiving (or transmitting) frequencies on the up link and the down link at a repeater station are made different from each other for the purpose of reducing interference crosstalk between the transmission signals. More particularly, a shift frequency corresponding to the difference between the receiving frequency and the transmitting frequency on the up link or the down link at a repeater station A is selected in sequence from any one of the reference shift frequency fc and a plurality of shift frequencies deviated from the reference shift frequency according to the relation fc + n.sub.i x .DELTA.f, where n.sub.i is a positive or negative integers and .DELTA.f is a radix deviation frequency.

REFERENCES:
patent: 2344813 (1944-03-01), Goldstine
patent: 2406932 (1946-09-01), Tunick
patent: 2407212 (1946-09-01), Tunick
patent: 2407213 (1946-09-01), Tunick
patent: 2874273 (1959-02-01), Jacobsen
"Communication Systems Design", Philip Panter, pp. 1-19, McGraw Hill, 1972.
"Microwave Communication" by Yonezawa et al., Maruzen Co., pp. 374-376, 1963.

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