The first 5G networks will be only slightly faster than the currently used LTE-Advanced base stations. However, the new generation of mobile networks has much greater potential. In Japan, the first tests have been completed, showing that 5G networks can be used to transmit data at 27 Gbps.
5G technology is currently at an early stage of development. Telecommunication companies and mobile carriers are working on building foundations that will lead to the real revolution. Therefore, the Japanese company Mitsubishi Electric Corporation and the operator NTT DoCoMo check what are the possibilities of new technologies. The Japanese managed to achieve a speed of 27 Gbps at a distance of 10 meters from the base station. Furthermore, at a distance of 100 meters they achieved 25 Gbps speed. The test was carried out in a 28 GHz millimeter band using a 500 MHz frequency block. In turn, the base station had an innovative antenna capable of radiating 16 data streams, which were picked up by an antenna mounted on the roof of the car.
The Japanese are preparing for the next 5G tests, this time in an urbanized environment
As you probably guessed, the snag in this type of tests is always in the details. For now, we are dealing with a situation in which 5G is known to surpass fiber-optic links without any problem. However, certain conditions must be met. The current test, in which the barrier of 25 Gbps was exceeded, was made in stationary conditions, i.e. the car was not moving. In addition, the Japanese provided very good radio conditions for testing. In this way, they showed the effectiveness of the algorithm which compensates interference occurring between the antenna beams. However, this is only the first step on a long road that ends with the commercial implementation of the new technology.
Mitsubishi Electric Corporation is preparing for further tests. This time, the Japanese want to check the behavior of the new technology in terms of multi-path propagation of the radio signal. It means that the signal sent by the base station antenna reaches the 5G modem with several paths. This phenomenon creates further problems that must be eliminated. Without this, we can not talk about the practical application of new technology, because the so-called multipath occurs in the world around us. Radio signals are reflected from the walls of buildings, crowns of trees, cars and other obstacles that they encounter on their way.
Source: RCR Wireless