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

摘要

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.