Why do we use MM waves in communication?

Some of the common challenges are lack of infrastructure, research methodology, and cost . A few other are: Inter-cell interference; Efficient Medium Access Control; Traffic Management; Multiple Services; and, Communication, Navigation, & Sensing.

Following are the disadvantages/demerits of the 5G millimeter wave. Millimeter wave goes through different losses such as penetration, rain attenuation etc. This limits distance coverage requirement of mm wave in 5G based cellular mobile deployment. Moreover path loss at mm is proportional to square of the frequency.

Millimeter waves are also known as extremely high frequency (EHF). It’s a radio frequency that would allow transmission frequencies between 30 GHz and 300 GHz , compared to 5 GHz frequencies used by previous mobile devices.

mmWave doesn’t penetrate walls Most building materials, such as cement and brick, attenuate and reflect very high-frequency signals with a big enough loss you’re unlikely to receive a very useful signal moving from inside to outside.

In telecommunications, millimeter wave is used for a variety of services on mobile and wireless networks, as it enables higher data rates than at lower frequencies , such as those used for Wi-Fi and current cellular networks. Propagation restrictions dictate the use of small cell sizes for Wi-Fi and cellular networks.

The key challenges on the design of these new mmWave communication technologies include multi-user interference mitigation in mmWave-NOMA, self-interference cancellation in full-duplex mmWave communications, fast beam tracking in mmWave UAV communications, and the security and multiple access issues in mmWave …30 Eyl 2019