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A super-fast 10Gbps, hundreds times quicker than the 4G services was successfully tested by the Japanese operator, NTT Docomo and is now beginning to roll out across North America and Europe. According to NTT Docomo, they collaborated with the Tokyo Institute of Technology in Okinawa's Ishigaki City in December to the conduct outdoor experiment. Using the 400 MHz bandwidth in the 11 GHz spectrum for the test, the operator said 10Gbps downlink speeds should be possible with the same equipment (on the account that only uplink transmissions were trialled). “Multiple-input multiple-output (MIMO) technology was used to spatially multiplex different data streams using eight transmitting antennas and 16 receiving antennas on the same frequency," the operator explains. "In light of the squeeze on remaining frequencies as mobile data traffic continues to increase, Docomo aims to achieve a transmission speed of more than 10 Gbps using super-high-frequency bands exceeding 5 GHz.” And though NTT Docomo acknowledges that high frequencies have historically been no good for long-range transmissions, the company has not showed any insight on how it will overcome such dilemma. See also: Australia's Satellite Communications Companies
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