S-CDMA Synchronous Code Division Multiple Access A proprietary version of code division multiple access (CDMA), S-CDMA was developed by Terayon Corporation for data transmission across coaxial cable networks. S-CDMA scatters digital data up and down a wide frequency band and allows multiple subscribers connected to the network to transmit and receive concurrently. This method of data transmission was developed to be secure and extremely resistant to noise. See also: CDMA