Patent ID: 7864819

Claim:
A method of bit demultiplexing for a rate 1/5 turbo encoder in a wireless communication system, comprising: receiving bits from a rate 1/5 turbo encoder; demultiplexing the received bits by distributing the bits sequentially into five sequences denoted as U, V 0 , V 1 , V 0 â€² and V 1 â€², where the first bit goes to the U sequence, the second to the V 0 sequence, the third to the V 1 sequence, the fourth to the V 0 â€² sequence, and the fifth goes to the V 1 â€² sequence; distributing 18 tail bits numbered 0 through 17, where tail bits numbered 0, 3, 6, 9, 12 and 15 go to the U sequence, tail bits numbered 1, 4 and 7 go to the V 0 sequence, tail bits numbered 2, 5 and 8 go to the V 1 sequence, tail bits 10, 13 and 16 go to the V 0 â€² sequence, and tail bits numbered 11, 14 and 17 go to the V 1 â€² sequence; and ordering the sequences where U is the first sequence, V 0 is the second sequence, V 0 â€² is the third sequence, V 1 is the fourth and V 1 â€² is the last sequence.