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:
Feb. 01, 2005
Filed:
May. 12, 2000
Kwang-man OK, Songnam-shi, KR;
Kwang-Man Ok, Songnam-shi, KR;
Abstract
A PN sequence acquisition device for a multicarrier CDMA mobile communication system including M (where M is a natural number) despreaders, each for multiplying BS generated PN sequences included in M carrier receiving signals by a local PN sequence of an nth (1≦n≦N, where n and N are natural numbers) time hypothesis in a predetermined integrating period; M correlators, each corresponding to a corresponding one of the M despreaders and each for calculating detection energies depending on correlations between the BS generated PN sequences of the corresponding one of M carrier receiving signals and the local PN sequence of the nth time hypothesis; a combiner for combining the detection energies corresponding to the local PN sequence of the nth time hypothesis for the M carrier receiving carriers; a controller for comparing the combined detection energy of the M carrier receiving signals, output from the combiner, with a threshold value; and N acquisition circuits including an nth local PN generator for providing the local PN sequence of the nth time hypothesis to the M despreaders and shifting a phase of the local PN sequence of the nth time hypothesis by a predetermined value under the control of the controller, whereby PN sequence acquisition is simultaneously performed on N time hypotheses.