MIMO-OFDM Channel Estimation Implementation

This program implements Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) channel estimation. The current implementation utilizes a 2×2 antenna system configuration, but the architecture is designed with modular components that allow flexible system replacement. Researchers can easily modify the system parameters to experiment with different antenna configurations (such as 4×4 or massive MIMO setups) by adjusting the transmitter/receiver array dimensions in the configuration files. The channel estimation algorithm employs pilot-based techniques where known reference signals are inserted in the frequency domain, with matrix operations handling the spatial multiplexing characteristics. Key functions include channel matrix calculation, least squares estimation, and signal reconstruction modules that maintain separation between different transmission streams while accounting for inter-antenna interference.