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:
Sep. 08, 2009
Filed:
Nov. 24, 2004
Shih-kai Lee, Taipei Hsien, TW;
Po-lin Chiu, Tai Nan Hsien, TW;
Chang-lung Hsiao, Hsin Chu, TW;
Jiann-an Tsai, Ping Tung Hsien, TW;
Shih-Kai Lee, Taipei Hsien, TW;
Po-Lin Chiu, Tai Nan Hsien, TW;
Chang-Lung Hsiao, Hsin Chu, TW;
Jiann-An Tsai, Ping Tung Hsien, TW;
Industrial Technology Research Institute, Hsinchu Hsien, TW;
Abstract
An apparatus for generating a 2D spreading code and method for the same are proposed. The apparatus for generating the 2D spreading code includes a column counter, a row counter, a codeword selector, and a logic unit. The logic unit performs logic operations on the output of the column counter, the row counter, and the codeword selector to generate the 2D spreading code of desired order designated by the codeword selector. The 2D spreading code includes 4 2×2 initial matrixes for generating 4codes for 4users in the iorder. The apparatus for generating the 2D spreading code according to the present invention is advantageously used in OFDM system to increase the number of subscribers with reduced interference.