CDM (Code Division Multiplexing)

Code Division Multiplexing (CDM) is a technique used to transmit multiple signals simultaneously over a single communication channel. Each signal is assigned a unique code, which spreads its data across a broad frequency spectrum. When all signals are combined, they overlap but can still be separated at the receiver end by using their specific codes. This method allows multiple users to share the same bandwidth efficiently, providing secure and interference-resistant communication. CDM is fundamental to technologies like CDMA (Code Division Multiple Access), often used in cellular networks for reliable, high-capacity communication.