Patent ID: 6556617
Filing Date: 2003-04-29
Classification: H04L

Abstract:
A spread spectrum diversity transmitter, comprising:an error correction encoding means for performing an error correction encoding for a series of transmitting data; an interleave means for performing an interleave for a signal outputted from said error correction encoding means; plural delay means which give different delay time for the signal outputted from said interleave means and makes said signal branch to Nâˆ’1 branches; a convolutional encoding means which performs a convolutional encoding whose coding rate R=N/M for signals of Nâˆ’1 branches outputted from said plural delay means and for a signal directly outputted from said interleave means, and outputs signals of parallel data of M branches; plural modulating means for modulating said signals of parallel data of M branches outputted from said convolutional encoding means respectively; plural spread spectrum means for performing spread spectrums for signals outputted from said plural modulating means by respective different spread codes; a combining means for performing a code division multiplex by combining said outputs from said plural spread spectrum means; and a transmitting means for transmitting said code division multiplex signal.