Patent ID: 6198733
Filing Date: 2001-03-06
Classification: H03M,H04B,H04J,H04L

Abstract:
A method for interleaving/de-interleaving a forward-line Sync channel of a communication system, comprising the steps of:(a) receiving an input symbol stream for the forward-link Sync channel;(b) implementing a closed-form expression relating each input symbol position to an output symbol position to generate the output symbol position for each symbol in the input symbol stream, wherein the closed-form expression corresponds to two or more different sets of mathematical operations being applied to bits in a binary value representing each input symbol position to generate bits in a binary value representing a corresponding output symbol position; and(c) generating an output symbol stream from the input symbol stream using the generated output symbol positions, wherein:when interleaving, the input symbol stream is an un-interleaved symbol stream and the output symbol stream is an interleaved symbol stream; andwhen de-interleaving, the input symbol stream is an interleaved symbol stream and the output symbol stream is a de-interleaved symbol stream.