Hybrid CPFSK/OQPSK Modulation Transmission Techniques’ Performance Efficiency with RZ Line Coding–Based Fiber Systems in Passive Optical Networks

Aadel M. Alatwi, Ahmed Nabih Zaki Rashed

Abstract


This study shows hybrid continuous-phase frequency shift keying (CPFSK)/optical quadrature-phase shift keying (OQPSK) modulation transmission techniques’ performance efficiency with return-to-zero (RZ) line coding scheme–based fiber systems in passive optical networks. Max. Q factor/min. bit error rate variations versus modulation frequency and fiber length are studied in detail for various bits/symbol, based on hybrid proposed modulation transmission techniques. Also, optical power and received electrical power variations are simulated with fiber-length variations at a specified modulation frequency of 300 GHz. Max. Q Factor, min. BER, max. signal power, and min. noise power variations are based on hybrid modulation techniques for CPFSK/OQPSK of 32 bits/symbol and a modulation frequency of 500 GHz through a fiber length of 30 km.


Keywords


CPFSK OQPSK RZ Line coding Fiber system Passive Optical networks

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DOI: http://doi.org/10.11591/ijeecs.v21.i1.pp%25p
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