From: A Programmable, Scalable-Throughput Interleaver
(a,b)1
(a,b)2
(a,b)3
(a,b)4
vector 1
(0,0)
(4,0)
(8,0)
(12,0)
vector 2
(16,0)
(20,0)
(24,0)
(28,0)
vector 3
(32,0)
(0,1)
(4,1)
(8,1)