Researchers from NTT Docomo and the Tokyo Institute of Technology are there for the first time managed to get an uplink speed to achieve 10Gbps from a moving car. The field test, the feasibility of higher cell throughput show.
For the experiment, the researchers use a bandwidth of 400MHz in the 11GHz spectrum. The difficulty here is that the scope of these high-frequency signals are not too high and that obstructions such as buildings, the signals may interfere. Hence, to date, significantly lower frequencies for mobile networks to be used. The obtained uplink speed of up to 10Gbps is a hundred times as fast as the current lte network, the Japanese telecom company.
As a mobile-base station a car used during the test with a speed of 9 kilometers per hour terminus through the streets of Ishigaki in the Okinawa district in Japan. In addition, the setup of mobile-radio transmitters with eight antennas. At the receiving side were sixteen antennas. For the sending of the packets was mimo-multiplexing and 64-qam modulation used. The technology can also be used for the downlink and it is suggested that the same throughput can be achieved.
NTT Docomo has been running for longer in the forefront in research into higher throughput for mobile applications. For example, the Japanese telecommunications company in 2006 to a practical test, from which a downlinksnelheid of 5 gbps is achieved.
