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:
Mar. 27, 2007
Filed:
May. 11, 2002
Applicants:
Guu-chang Yang, Nan-Tun Ward, TW;
Chia-ming Yang, Taipei Hsien, TW;
Pei-hsuan Lin, Tai-Chung Hsien, TW;
Inventors:
Guu-Chang Yang, Nan-Tun Ward, TW;
Chia-Ming Yang, Taipei Hsien, TW;
Pei-Hsuan Lin, Tai-Chung Hsien, TW;
Assignee:
Accton Technology Corporation, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A code tree of two-dimensional orthogonal variable spreading factor (2D-OVSF) code matrices for a multicarrier direct-sequence code-division multiple-access (MC-DS/CDMA) communications system is generated by providing two sets of 2×2 orthogonal matrices {AA} and {BB}. The first set of 2×2 matrices is used to generate a pair of sibling nodes in the code tree that respectively represent matrices Aand Aby iterating the relationship: