Spread Spectrum Multiple Access (SSMA) is a variant of Code Division Multiple Access (CDMA), a multiple access method
on a radio medium. The SSMA method works with spread spectrum technology, in which broadband radio channels are used to transmit the user data, although the data is specially coded before transmission. SSMA uses a pseudo-random number (PRN) as the coding, whereas CDMA uses a simple-to-generate code. Each data bit is combined with all the bits of the pseudo-random number.