Space-division multiplexing is implemented using separate physical connections between endpoints. Effectively, it is a simulation of multiplexing that is actually multiple carriers bundled together. This can be implemented with physical cables, such as an 8-conductor Ethernet twisted pair cable, or via wireless as seen in the IEEE 802.11n amendment adding multiple in multiple out (MIMO) to wireless networking. Because space-division multiplexing is actually using multiple communication channels rather than a single channel to support multiple communications, it is not considered true multiplexing.

Frequency-division multiplexing is an analog technology that supports the transmission of multiple communications over a single carrier by shifting each communication to a unique frequency range. A related technology for fiber channels is known as wavelength division multiplexing. This technology requires that each communication be transmitted as unique wavelength (i.e. color) of light along the shared fiber optic channel.

Time-division multiplexing is a technology that involves merging or sequencing bits or bytes from multiple signals into a single communications channel. Specific time slices or time divisions are assigned to each communication. This timed-based channel switching is synchronized between the endpoints of the multicast pathway. When performed fast enough, the transmitting and receiving systems do not realize their communications are crossing a multicast pathway.

Polarization-division multiplexing uses polarized electromagnetic signals to create multiple orthogonal channels. Orthogonal channels are those whose frequencies are at right angles to each other when transmitted along the same communication path. This orientation prevents interference and enables multiple signals to be sent along the same path. This method of multiplexing is applicable to both radio wave transmissions and optical transmissions.

Code-division multiplexing operates by assigning a unique code to each communication. The original communication and assigned carrier code signal are combined. Then, multiple coded signals are transmitted over the carrier channel or channels simultaneously. The receiver extracts the multiple signals by extracting the appropriate carrier code signal from the desired transmission. This technology can be applied when using a spread spectrum of available frequencies in either a frequency hopping spread spectrum (FHSS) or direct sequence spread spectrum (DSSS) form. FHSS uses a single frequency at a time but switches frequencies to avoid interference or eavesdropping. DSSS uses multiple frequencies simultaneously.