Transmission Data in 3D Channel Using Adaptive Algorithm Based on The MIMO-OFDM in a Densely Built-Up Area

To improve the capacity by a factor of the minimum number of transmit and receive antennas, additional transmit and receive antennas can be utilized to create multiple-input multiple-output (MIMO) channels. Wideband transmission may utilize MIMO-OFDM, an orthogonal form of frequency division multiplexing (OFDM) for MIMO channels, to reduce inter-symbol interference and increase system capacity. In order to increase network performance when non-line-of-sight communications, which are prevalent in densely populated areas, occur, this research offers a suitable adaptive algorithm to be employed in wireless networks based on MIMO OFDM system. On the system's performance, the impacts of multiple pathways signal attenuation, Doppler shift, and various mobility speeds were studied. Utilizing BER, SNR, and noise components, mathematical models analysis of adaptive modulation in MIMO systems is handled. According to simulation data, the adaptive method would increase throughput. Implementation of adaptive algorithms has an improving effect on noise immunity when processing signals in a receiving system under the circumstances of multi-path signal propagation, it can also be concluded.