单词 | spread spectrum |
释义 | > as lemmasspread spectrum spread spectrum n. Telecommunications the transmission of a signal over a wider bandwidth than is necessary, typically by varying its frequency or phase transition; frequently attributive. ΚΠ 1953 Trans. IRE Professional Group Communications Syst. 1 132/1 The signal acquisition process includes the search for the PN code epoch (for spread-spectrum signals). 1990 InfoWorld 30 Apr. Target ed. S3/2 Like many forms of military and space research, work done on spread-spectrum radio has proved to be applicable in civilian situations. 2005 A. Goldsmith Wireless Communications xiii. 403 Spread spectrum is a technique that increases signal bandwidth beyond the minimum necessary for data communication. < as lemmas |
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