Described is a variable rate transmission apparatus for spread modulating data signals by using spread code sequences and transmitting the processed signals. The variable rate transmission apparatus spread modulates the data signals, upon the condition that the transmission rate of each data signal is...http://www.google.fr/patents/US6628667?utm_source=gb-gplus-shareBrevet US6628667 - Variable rate transmitting method and apparatus using bi-orthogonal functions for variable rate transmission rates above a predetermined value
Variable rate transmitting method and apparatus using bi-orthogonal ...
