Further Notes and Anecdotes on Spread-Spectrum Origins
IRE Transactions on Communications SystemsPublished 1 January 1983
Robert M. Price
Citations25
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TL;DR
This sequel to R. A. Scholtz's monograph of May 1982, in this TRANSACTIONS, adds to the early history of spread-spectrum communications from circa 1900 until about 15 years ago, with sidelights on the beginnings of information theory.
Abstract
This sequel to R. A. Scholtz's monograph of May 1982, in this TRANSACTIONS, adds to the early history of spread-spectrum communications from circa 1900 until about 15 years ago. Relevant to the origins of this field of radio signaling, the following are included in a number of items of quite recent appreciation: the 1930 invention of secret communications featuring spectrum despreading via a locally generated reference at the receiver; a stratagem of electronic warfare during the Battle of the Bulge, in World War II, that cleverly made use of Armstrong's frequency modulation; and the role of a star actress from the motion picture field, in origination of frequency hopping for antijamming radio control of missiles. Some further, and first-hand, reminiscences are given of germinal M.I.T. spread-spectrum contributions, and of similar noise-correlation radar art. Extensive footnotes cast sidelights on the beginnings of information theory, and also, among other things, on the keeping of military high-technology secrets over decades, even between securitycleared family members. A variety of references is appended.
Keywords
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