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:
Dec. 27, 2011
Filed:
Nov. 30, 2007
Mahmoud Hadef, Staines, GB;
Josh Reiss, London, GB;
Xiaodong Chen, London, GB;
European Union, , BE;
Abstract
Generation of a set of spreading codes starts with determining first and second chaotic pseudo-random noise codes having delta-peak-like autocorrelation functions and a low cross-correlation function. Further codes are obtained by the steps: (a) generating a further pseudo-random noise code by computing D=F(C)+TC+F(C), where k represents a positive integral index, Dthe generated pseudo-random noise code, Cthe first code, Cthe second code, F a binary function based on basic binary operations and Tthe operator cyclically shifting a code by k chip positions; (b) adding code Dto the set of already determined pseudo-random noise codes if it has a delta-peak-like autocorrelation and low cross-correlation functions with the pseudo-random noise codes already determined; (c) discarding code Dif the conditions of step (b) are not satisfied; (d) modifying index k and repeating steps (a)-(d) until the cardinal number of the set of determined pseudo-random noise codes reaches the cardinal number of the set of spreading codes to be generated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile