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. 11, 2012
Filed:
Dec. 25, 2009
Shuenn-gi Lee, Hsinchu, TW;
Chung-hsuan Wang, Hsinchu, TW;
Wern-ho Sheen, Chiayi, TW;
Industrial Technology Research Institute, Hsinchu, TW;
National Chiao Tung University, Hsinchu, TW;
Abstract
An address generation apparatus for a quadratic permutation polynomial (QPP) interleaver is provided. It comprises a basic recursive unit, and L recursive units represented by first recursive unit up to Lrecursive units. The apparatus inputs a plurality of configurable parameters according to a QPP function Π(i)=(fi+fi) mod k, generates a plurality of interleaver addresses in serial via the basic recursive unit, and generates L groups of corresponding interleaver addresses via the first up to the Lrecursive units, wherein Π(i) is the i-th interleaver address generated by the apparatus, fand fare QPP coefficients, and k is information block length of an input sequence, 0≦i≦k−1.