Ülekandmiks

Ülekandmiks is a term used in Estonian telecommunications literature to denote the process of combining multiple signals into a single transmission stream for onward transmission. The concept is closely related to multiplexing and modulation, but the exact usage varies by context. In broadcasting and data communications, ülekandmiks refers to the mixture of audio, video, and data signals so that they can be transmitted through a shared channel while allowing separate recovery at the receiver. Practically, this can involve frequency-division multiplexing, time-division multiplexing, or code-division multiplexing, as well as modulation schemes that place multiple sub-signals onto a carrier.

In radio and television engineering, ülekandmiks often describes the pre-transmission stage where program and control channels are combined, or where several program streams are combined into a single transport stream. In telecom networks, it can denote the aggregation of multiple data streams into a higher-bandwidth link.

The term is primarily found in Estonian-language technical literature and standards, and there is no universally adopted definition in English-language sources. As a result, its exact scope can differ between institutions, manufacturers, and regulatory bodies. See also multiplexing, modulation, signal processing, and transport streams.