ISDB-S Technology

The main reason that the Japanese Association of Radio Industries and Business (ARIB) developed the ISDB-S single-carrier standard was to offer HDTV capability, interactivity and spectrum efficiency. In 2000, ISDB-S (ARIB STD-B20) was implemented by the network operator NHK.

In comparison to DVB-S, the capabilities that were introduced included primarily higher-order modulation, error correction and time-domain multiplexing. With the new modulation mode named "Trellis coded 8-phase phase shift keying" (TC8PSK), data rates of typically 52.2 Mbit/s are possible in a transmission channel that has a width of 34.5 MHz.

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