Patent ID: 7620881
Filing Date: 2009-11-17
Classification: H03M,H04L

Abstract:
1. A system for communicating data comprising: a transmitter, comprising an outer encoder for encoding data with a convolutional code; a first interleaver that receives encoded data from the outer encoder and interleaves the data randomly; an inner encoder that receives data from the first interleaver for encoding data with a recursive inner rate one code; a second interleaver that receives the encoded data from the inner encoder to interleave the data to aid in removing correlation of multipath fading channels on consecutive bits; a modulator for coherently modulating the communications signal that carries the data that has been encoded by the outer and inner encoders and interleaved by first and second interleavers comprising a cryptographic device for known symbols to aid in tracking at a receiver any multipath fading channels; and a receiver that receives the communications signal from the transmitter, and comprising an equalizer and an inner deinterleaver followed by a rate