Adaptive MIMO-OFDM Framework for Enhancing Wireless System Performance through Dynamic Modulation and Improved Spectral Efficiency

This document Technological advancements allowing for high-performance mobile broadband Internet and real-time multimedia functionality are required across a range of devices due to technological advancements. LTE is a new standard for wireless communications, providing better throughput and spectrum efficiency than competing technologies. LTE utilizes OFDM and MIMO to meet the challenging data rate and throughput demands. MIMO is OFDM’s inherent fading resistance and the high spectral efficiency, which make it desirable. Time and frequency dispersion cause intersymbol and intercarrier interference. Cyclic prefixes are used to mitigate intersymbol interference; OFDM is more spectrally inefficient as it is. FBMC is a viable candidate for future communication technology to mitigate OFDM spectral inefficiency. This research proposes an MIMO-FBMC to improve a MIMO system’s performance under time-varying and time-dispersive channel scenarios. An adaptive filter design is also presented for MIMO-FBMC systems to operate effectively within doubly dispersive channels. Simulation outcomes show that the proposed MIMO-FBMC systems achieve significantly better performance in terms of throughput and BIT ERROR RATE when the system is configured to operate under the LTE standards.