Design and Analysis of High-Capacity MIMO System in Line-of-Sight Communication

Area of Science:

• Electrical Engineering
• Wireless Communication
• Signal Processing

Background:

• Channel matrix phase significantly impacts channel capacity in mobile multiple-input multiple-output (MIMO) systems, especially in line-of-sight (LoS) scenarios.
• Optimizing antenna configuration is crucial for maximizing communication efficiency in various environments.

Purpose of the Study:

• To derive a general expression for the channel matrix phase at maximum channel capacity.
• To determine optimal antenna configurations for 2x2 and 3x3 transceiver antenna arrays in LoS communication.
• To propose methods for n x n optimal antenna placement for specific applications.

Main Methods:

• Mathematical derivation of the general expression for optimal channel matrix phase.
• Analysis and simulation of antenna array configurations (2x2 and 3x3) for LoS communication.
• Evaluation of proposed configurations for train and inter-satellite communication scenarios.

Main Results:

• A general expression for the channel matrix phase at maximum capacity was determined.
• Optimal antenna configurations were identified for 2x2 and 3x3 arrays in LoS.
• The 2x2 rectangular array is suitable for coupling train communication.
• The 3x3 circular arc array is suitable for virtual coupling trains.
• The 2x2 rectangular configuration achieved optimal channels for inter-satellite communication.

Conclusions:

• The study provides a theoretical foundation and practical configurations for optimizing MIMO systems in LoS environments.
• The findings are applicable to short-range, non-scattering communication, including train and inter-satellite links.
• This research facilitates the deployment of advanced communication systems by optimizing antenna placement and phase.