Data transmission method, data reception method, data transport method, data transmission apparatus, data reception apparatus and data transport system as well as communication terminal

Abstract

On a transmitting side, input data is separated into a first data row and a second data row by the unit of predetermined symbol; one code is selected among a plurality of orthogonal codes in accordance with the separated second data row; the first data row is diffused using the selected code; and the diffused first data row is modulated to be transmitted. On a receiving side, a receiving signal is inversely diffused individually using the same plurality of orthogonal codes as the orthogonal codes on the transmitting side; a signal which is inversely diffused using a correct orthogonal code is selected among the inversely-diffused respective receiving signals; a first receiving data row is obtained from a demodulation of the selected signal; a second receiving data row corresponding to the correct orthogonal code which is selected by the selection is obtained; and receiving data is obtained by composing the first receiving data row and the second receiving data row.

1 - 6 . (canceled)  
   
   
       7 . A data transmission apparatus, comprising: 
 means for separating input data into a first data row and a second data row by the unit of predetermined symbol;    means for selecting one code among a plurality of orthogonal codes prepared in advance in accordance with said second data row separated in said separation means and diffusing said first data row using the selected code; and    means for modulating said diffused first data row by a predetermined modulation method.    
   
   
       8 . (canceled)  
   
   
       9 . A data transmission apparatus, comprising: 
 a separator to separate input data into a first data row and a second data row by the unit of predetermined symbol;    a diffusion circuit to diffuse said first data row in accordance with said second data row separated by said separator using a corresponding code among a plurality of orthogonal codes prepared in advance; and    a modulation circuit to modulate said diffused first data row by a predetermined modulation method.    
   
   
       10 - 15 . (canceled)  
   
   
       16 . A communication terminal comprising a data transmission apparatus, wherein said data transmission apparatus includes: 
 separation means for separating input data into a first data row and a second data row by a unit of a predetermined symbol,    means for selecting one code among a plurality of orthogonal codes prepared in advance in accordance with said second data row separated in said separation means and for diffusing said first data row using a selected code, and    means for modulating said diffused first data row by a predetermined modulation method.    
   
   
       17 - 18 . (canceled)