Improve the FBMC-OQAM Optical Chain utilizing Equalizers with M-BPS

One of the important concerns in 5G and 6G research is "filter bank multi carrier with OQAM". excellent spectrum efficiency, little side lobe leakage, zero cyclic prefix (CP), and multiphase filter design suit multi-carrier approaches. Large optical fiber network subcarrier designs need FBMC-OQAM. Laser phase noise occurs when the laser output phase drifts over time, may significantly reduce fiber-optic communication system throughput. Space division multiplexing or wavelength division multiplexing using frequency combs may be linked to this degradation in multichannel fiber-optic systems that share lasers. For this research, we employ optical communication system within FBMC OQAM that uses parallel Analysis Filter Banks (AFBs) as "equalizers" receiver to adjust for phase noise, and chromatic dispersion. Modified Blind Phase Search tracks and compensates carrier phase in the received signal after CD compensation equalization. In order to determine how successful these procedures are, they are mathematically and graphically evaluated and simulated. 64-OQAM is used to compare FBMC efficiency across equalizers. We measured performance using BER, OSNR, Q-Factor, and MSE. A comparison was made between MBPS, ISDF with the suggested Parallel Analysis Filter Bank (AFB), and single-tap and multi-tap methods (N=3). The research presents an innovative equalization method that integrates parallel AFB (Analysis Filter Bank) and MBPS (Modified blind phase search) equalization to concurrently mitigate chromatic dispersion (CD) and phase noise (PN) in FBMC-OQAM systems. This approach represents an improvement over standard single-tap equalization,