Tejovathi VENATI and Swarnalatha SUGALI 2025. A Power-Efficient Optical Modem for Reliable, Long-Distance Communication Using GFDM Technology in Underwater and Terrestrial Wireless Systems. International Journal of Computational and Experimental Science and Engineering. 11, 1 (Feb. 2025). DOI:https://doi.org/10.22399/ijcesen.1034.