New communication possibilities in MIMO networks

It consists of creating multiple spatial channels (paths) between the sender and the receiver, which allows for a significant increase in the total link throughput and/or reliability. The author introduces a simple model of such transmission, in which he takes into account significant environmental factors, including non-selective (flat) signal fading. As a result, Monte Carlo simulations are used to obtain bit error rate curves as a function of the signal-to-noise power ratio for a parametric change of the normalized fading bandwidth
BT, where B is the coherence (instability) bandwidth of fading, and 1/T is the signal transmission rate.
In the conclusions, the author confirms the effectiveness of the new technology, while noting that the actual gains are significantly lower than theoretical predictions for typical operating conditions and that large financial investments are necessary during the development and implementation of the new technology into practice. Wireless communication is developing at a dizzying speed. The stream of information transmitted this way doubles roughly every two years. There are concerns that in a few years, a regression may occur due to the occupation of all available frequencies and the emergence of significant mutual interference. Such a state is already noticeable in the United States. (…)

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