Abstract
A hybrid spectrally amplitude coded (SAC) optical code division multiple access (CDMA) with subcarrier multiplexing (SCM) scheme is a potential candidate for future broadband access solutions in the communication network. In this work, the performance of hybrid technique is investigated. Theoretical derivations are developed based on the zero cross correlation (ZCC) code. The performances are evaluated taking into account the relevant noises such as thermal noise, shot noise and inter modulation noise. Design parameters such as number of optical channels, number of subcarriers, and input power are varied to see their effect on the system performances. Simulation analysis using Optisys simulator is also done and compared to the numerical theoretical results. We measured the performance based on the merits of received power, input power and bit error rates of the received signals. Results revealed that power penalty due to increased number of channels in the hybrid system is lower compared to the conventional OCDMA system, and hence improving the system performance in term of power efficiency. This exhibits the ability of the hybrid system to be one powerful technique as a candidate for future access network. Key words: Spectral amplitude coding-optical code division multiple access (SAC-OCDMA), subcarrier multiplexing (SCM), zero cross correlation (ZCC), broadband access network.
Highlights
Recent years have seen the rapid growth of bandwidth hungry broadband access network which keeps the network and service providers busy finding ways of connecting the network up to the last mile solutions
Results revealed that power penalty due to increased number of channels in the hybrid system is lower compared to the conventional optical code division multiple access (OCDMA) system, and improving the system performance in term of power efficiency
On the other hand, we proposed the application of optical code division multiple access (OCDMA) scheme instead of the Wavelength Division Multiplexing (WDM) to be integrated with the RF domain in subcarrier multiplexing (SCM) manner
Summary
Recent years have seen the rapid growth of bandwidth hungry broadband access network which keeps the network and service providers busy finding ways of connecting the network up to the last mile solutions. An ultimate solution that can satisfy the limitations in the broadband access network is the convergence of the optical access and wireless access to exploit the advantages of both architectures rather than their stand-alone architecture. This hybrid technology gives rise to the fiber-wireless (Fi-Wi) access networks, or known as the Radio over Fiber (RoF) technology. On the other hand, we proposed the application of optical code division multiple access (OCDMA) scheme instead of the WDM to be integrated with the RF domain in subcarrier multiplexing (SCM) manner
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
