Method for forming a directional diagram of the receiving and transmitting module of a multi-channel mobile wireless ultraviolet communication system

摘要

To organize mobile ad-hoc networks (MANET) based on UV-C communication modules, it is necessary to provide communication with nodes in all possible directions, both at the availability of line-of-sight (LOS) and non-line-of-sight (NLOS) conditions. It is shown that the use of circular arrays of optical transmitters and receivers is promising for solving this problem. A two-tier configuration of the optical component arrays is proposed, in which the single lower tier with small elevation angles is used for communication in LOS mode, and the upper tier with large elevation angles is used to round high terrain obstacles in NLOS mode. The performance characteristics of this multiple input, multiple output (MIMO) UV communication systems with spatial channel multiplexing are calculated using the proposed configuration. The detection on the receiving side is based on one of three criteria: Maximum Likelihood (ML); Zero-Forcing Successive Interference Cancellation (ZF-SIC), and Minimum-Mean-Square-Error SIC (MMSE-SIC). It is shown that in real systems it seems appropriate to use the MMSE-SIC method, which provides a compromise between computational complexity and the number of bit errors. The results show that the application and optimization of circular arrays of optical transmitters and receivers are promising for building a MANET network with a UV channel.