CDMA

摘要

The spread code system of a code division multiple access CDMA system using a spread spectrum method includes: a spread code source distributor for distributing a common random spread code source with key distribution protocol between a transmitting party and a receiving party; a spread code generator inputting the random spread code source provided from the spread code source distributor to spread an input signal of the CDMA system; and a modulator inputting an input signal of the CDMA system spreaded by an output of the spread code generator to modulate it and after that, transmitting it to the receiving party.