Multiple Access Methods in Commercial Communications Systems

Abstract

Time division and/or code division multiple access techniques based on spread spectrum modulation and demodulation technology have found wide application in military systems. These techniques also offer advantages for use in systems that allow for large numbers of users in civil communications systems. This paper considers spread spectrum multiplexing as a technique that allows time division multiplexing multiple access to communications networks. It also provides for multiple networks to operate in the same band through code division multiplexing.