Browsing by Author "WANG CHUNG HSUAN"

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ADDRESS GENERATION APPARATUS AND METHOD FOR QUADRATIC PERMUTATION POLYNOMIAL INTERLEAVER
(2012-02-23)
LEE SHUENN-GI
;
WANG CHUNG HSUAN
;
SHEEN WERN-HO
An address generation apparatus for quadratic permutation polynomial (QPP) interleaver receives several configurable parameters and uses a plurality of QPP units to compute and outputs a plurality of interleaving addresses according to a QPP function Π(i)=(f1i+f2i2) mod k, where f1 and f2 are QPP coefficients, k is information block length of an input sequence, 0≦i≦k−1, and mod is a modulus operation. Each of the plurality of QPP units is a parallel computation unit, and outputs in parallel a corresponding group of interleaver addresses, where Π(i) is also a ith interleaving address generated by the apparatus.