InterDigital Inc (IDCC)

[Gamco]

United States Patent 6,862,707
Shin March 1, 2005

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Turbo code encoder having an improved interleaver


Abstract
A turbo code encoder with an interleaver having two recursive systematic constituent code (RSC) encoders. The encoder encodes a finite sequence of informative bits without requiring a plurality of tail bits to flush the registers of each encoder to an all-zero state. The interleaver reduces the turbo code overhead by using only a single tail bit sequence. The interleaver also selectively reorders integers in accordance with a predefined set of rules.


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Inventors: Shin; Sung-Hyuk (Fort Lee, NJ)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 075545
Filed: February 14, 2002

Current U.S. Class: 714/786; 714/701
Intern'l Class: H03M 013//00; G06F 011//00
Field of Search: 714/755,701,702,786