Channel Modelling of 5th Generation Communication Technology

Abstract

There are continuous efforts to optimize mobile communications networks, in order to get the maximum performance out of them. Accurate radio channel knowledge is crucial to do this well. When optimizing network performance, it is very important that the modelling of the radio channel directional characteristics is realistic and not over-simplified. Direct device-to-device communication, an important area for 5G, presents one challenging scenario from a radio propagation perspective: dual link end mobility. Both ends of the link may be moving, which is in contrast to standard cellular communications where the base station end of the link is fixed. Another scenario is radio communication through crowds, where a large number of people may move around and temporarily block the radio link.We have discussed some of the major technologies we are going to use in channel modelling. MIMO systems consist of multiple antennas at both the transmitter and receiver. By adding multiple antennas, a greater degree of freedom in wireless channels can be offered to accommodate more information data in massive MIMO systems, the transmitter and/or receiver are equipped with a large number of antenna elements (typically tens or even hundreds). A massive MIMO system can also significantly enhance both spectral efficiency and energy efficiency. Next generation wireless technology that can provide up to multi - Gbps wireless connectivity. Data rate is expected to be 40-100 times faster than today’s wireless LAN technologies. Frequency range is from 25GHz to 300GHz.Based on the principle of line of sight (LOS) paths. It is required to use reflective paths by many object.