Japanese mobile operator NTT Docomo and Tokyo Institute of Technology reported that they had the world's first experimental mobile data at a speed of 10 Gb / s. Clarify that the experiment was conducted is December 11, 2012, but declared about it just now.
According to the participants of the experiment, it was possible to confirm the possibility of a hundred times faster than the maximum speed for today in networks NTT Docomo Xi LTE, at 100 Mbit / s.
In an experiment carried out in the city of Ishigaki, the mobile station moving at a speed of about 9 km / h, the transmitted signal in the band of 400 MHz at a frequency of 11 GHz. For spatial multiplexing of data streams used technology MIMO: 8 transmit antennas and 16 receivers operating on the same frequency.
In light of the imminent completion of the selected range for the growth of mobile data traffic Docomo seeks to achieve transfer rates greater than 10 Gb / s using frequencies above 5 GHz. The use of such high-frequency radio wave propagation characteristics is difficult, in other words, the presence of numerous obstacles in their way. As a result of research and development carried out Docomo, its professionals can consistently improve the speed, first had to take the bar 2.5 Gb / s , and then - and 5 Gbit / s.
Source: NTT Docomo
No comments:
Post a Comment