CDMA is a form of multiplexing, which allows numerous signals to occupy a single transmission channel, optimizing the use of available bandwidth. The technology is used in ultra-high-frequency (UHF) cellular telephone systems in the 800-MHz
* One of the early applications for code division multiplexing is in the Global Positioning System (GPS).
* This predates and is distinct from its use in mobile phones.
* CDMA has been used in satellite system for transportation logistics.