A test by SK Telecom and Nokia Networks demonstrated 19.1 Gbps mobile network transmission speed using 256 quadrature amplitude modulation (QAM), 8x8 Multiple-Input Multiple-Output (MIMO) transmission and 400 MHz of bandwidth.
The companies did not say which specific frequencies were used as part of the test, or the propagation distance. But those speeds correspond to peak transmission rates that are part of the recommended IMT-2020 standard (fifth generation mobile).
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