DSSS signals, the data digital to frequency in Band 4 .2 division) in this technique, a pattern distinct from for every prophet, sent from the information are made. ( Logic XOR ) of the pattern chip is called, and whatever the length of the chip in a higher probability of access to the information ك security more. (Of course, to bandwidth more is needed). Data transfer rate as much as 11 Mbps is higher for velocities above and long used used.