space division multiple access (access method) (SDMA)
Space Division Multiple Access (SDMA) is a multiple access method for radio communication systems in which the same frequencies are used several times. The method, which is based on space division multiplexing, is used, for example, in cellular networks and in satellite communications.
With SDMA technology, a transmitter can send several signals on the same frequency, but these are transmitted with different polarizations in space. On the transmitter side, multiple use is achieved via polarization-selective antennas. The polarization can be aligned vertically or horizontally, or rotated to the right or left. Wave selection is performed by the antenna aligned in the plane of polarization or by the LNC converter in the satellite antenna.