4G tests

4G tests
DoCoMo has achieved 2.5Gbit/s packet transmission in the downlink while moving at 20km/h. Using 6 MIMO antennas and 64-QAM modulation, data volume per transmission was increased from four bits to six bits, allowing a bit rate of 2.5 Gbit/s. As a result, information bits per second per Hertz was increased from 10 bits per second per Hertz during the last experiment to 25 bits. With the result, DoCoMo exceeds International Telecommunication Union Radiocom Sector (ITU-R)' s proposed standard.