The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 1989
Filed:
Jun. 24, 1988
Walter Braun, Wettingen, CH;
Joachim Habermann, Baden, CH;
BBC Brown Boveri AG, Baden, CH;
Abstract
In a signal transmission method, a sequence of equally distributed statistically uncorrelated symbols having a symbol duration T.sub.S is converted, in a transmitter, into a frequency baseband signal by means of a given CPM method, the frequency baseband signal is transmitted to a signal receiver by means of a carrier oscillation and the receiver is synchronized with respect to the frequency baseband signal. The signal receiver is synchronized in such a manner that, in a number N of time windows the starting times of which are displaced by an integral multiple of the symbol duration T.sub.S referred to a given reference time t.sub.R and the length of which in each case corresponds to the symbol duration T.sub.S, the frequency baseband signal is sampled in a number K of subintervals (1A, 1B, 1C, 2A, . . . ) per time window, dispers ions (.sigma..sub.A, .sigma..sub.B, .sigma..sub.C) are calculated for sampled values from subintervals (1A, 2A, 3A, . . . ) corresponding to one another and a sampling time T.sub. A is derived from the location of the smallest one of the dispersions in time. The N time windows are divided into two groups (1A, 1B, 1C, 3A, 3B, . . . ; 2A, 2B, 2C, 4A, 4B . . . ) and the dispersions (.sigma..sub.A, .sigma..sub.B, .sigma..sub.C) are separately determined for each group.