Simulation study evaluates spectral efficiency in radio-over-fiber OFDM links across distances up to 150 km, indicating optimal trade-offs for high-order modulation schemes.
This paper has demonstrated the quadrature amplitude modulation (QAM) based radio over fiber orthogonal frequency division multiplexing (RoF-OFDM) performance optimization using OptiSystem simulation for spectral efficiency enhancement. The spectral system efficiency can be enhanced through the different modulation schemes such as quadrature phase shift keying (QPSK) and 8, 16, 32, 64, 256 level based quadrature amplitude modulation (QAM). The optical signal per noise ratio is studied through the fiber link against the transmission distance and data transmission bit rate based various QAM modulation schemes. The output received power is demonstrated and measured at receiver versus the different modulation schemes and data rate transmission at the presence of different transmission distance ranges from 50 km to 150 km. The spectral efficiency, signal per noise ratio, and bit error rate are clarified clearly against the transmission distance with different transmission data rates based on high modulation level QAM modulation scheme.
No takes yet. Share an insight, caveat, or question.
Prabu et al. (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: