Performance Analysis of High Mobility Spatially Correlated MIMO-OTSM Systems for Aerospace and Defence Networks

This study introduces a novel MIMO detection strategy using Orthogonal Time Sequency Multiplexing (OTSM) modulation, specifically designed for Aerospace and Defense networks. It employs maximum ratio combining (MRC) to improve signal integrity by addressing multipath effects and inter-antenna interference, crucial under typical hardware constraints like carrier frequency offset (CFO). The method includes precise sub-channel estimation and an optimized frame structure that reduces interference and simplifies parallel processing. These enhancements decrease system complexity and enhance performance. Empirical results demonstrate the robustness of the Single User (SU) MIMO-OTSM system in spatially correlated environments, highlighting the strategy’s potential to enhance military communications significantly.