Enhanced Performance of SAC-OCDMA System based on SPD Detection Utilizing EDFA for Access Networks

Abdulqader, Sarah G.; Aljunid, Syed Alwee; Al-Khafaji, Hamza M. R.; Fadhil, Hilal A.

doi:10.12720/jcm.9.2.99-106

Cited by 14 publications

(7 citation statements)

References 11 publications

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“…where erfc is the complementary error function. The parameters that were used in the simulation of the proposed system are given in Tables 2 and 3 [19,20,22].…”

Section: Discussionmentioning

confidence: 99%

“…The SAC-OCDMA system using MDW codes with SPD detection technique with a PIN detector in the presence of EFDA showed improvement in BER [13]. It is shown that the system at a bit rate of 622 Mbps with EDFA can transmit over a distance of 70 km with a BER of approximately 10 −27 , while the BER is about10 −24 without EDFA at the same distance [22].…”

Section: Presence Of Edfa Onlymentioning

confidence: 97%

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Enhanced Spectral Amplitude Coding OCDMA System Utilizing a Single Photodiode Detection

et al. 2018

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In this paper, the performance of a spectral amplitude coding-optical code division multiple access (SAC-OCDMA) system is investigated utilizing a single photodiode (SPD) detection technique. The proposed system uses enhanced double weight (EDW) codes as signature codes with three simultaneous users to overcome both phase-induced intensity noise (PIIN) and multiple access interference (MAI). In addition, a dispersion compensating fiber (DCF) is used in order to decrease the group velocity dispersion (GVD) caused in the single mode fiber. An erbium-doped fiber amplifier (EDFA) is used to overcome the attenuation. The use of both DCF and EDFA leads to an appreciable enhancement in the system performance. The system performance is evaluated through its bit error rate (BER), Q-factor, and received power. A comparison between the EDW codes and modified double weight (MDW) codes on the SAC-OCDMA system is demonstrated. Simulation is carried out through Optisystem ver. 7. The simulation results show that: (a) using an avalanche photodiode (APD) over PIN photodiode allows data transmission over longer distances; (b) the use of DCF improves the system BER;(c) using MDW codes gives better BER than using EDW codes.

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“…where erfc is the complementary error function. The parameters that were used in the simulation of the proposed system are given in Tables 2 and 3 [19,20,22].…”

Section: Discussionmentioning

confidence: 99%

Section: Presence Of Edfa Onlymentioning

confidence: 97%

Enhanced Spectral Amplitude Coding OCDMA System Utilizing a Single Photodiode Detection

et al. 2018

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“…This reduces the amount of optical-to-electrical conversion and shot noise generated at the receiver part [1].…”

Section: Single Photodiode Detection (Spd)mentioning

confidence: 99%

“…OCDMA technique is a method of sharing the bandwidth of optical fiber among the number of users in the local area network [1] meanwhile WDM technique and TDM technique are applicable for long-haul networks. In addition, both of TDMA and WDMA techniques required deterministic wavelength assignment and strict synchronous time-slot control, respectively [2].…”

Section: Introductionmentioning

confidence: 99%

Comparison between Conventional OCDMA and Subcarrier Multiplexing SAC OCDMA System Based on Single Photodiode Detection

et al. 2017

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Abstract. This paper demonstrates the comparison between conventional OCDMA system and subcarrier multiplexing (SCM) SAC-OCDMA system by applying Recursive Combinatorial (RC) code based on single photodiode detection (SPD). SPD is used in the receiver part to reduce the effect of multiple access interference (MAI) which contributes as a dominant noise in incoherent SAC-OCDMA systems. From this analysis, the performance of SCM OCDMA network could be improved by using lower data rates and higher received power. The hybrid SCM OCDMA system shows better performance compare to conventional OCDMA system although the number of users involved is very high. This is because, for hybrid SCM OCDMA system, the number of users can be increased by increasing the number of subcarriers without affect the number of code length and optical codes. Increasing the number of subcarriers will enhance the power consumption by applying hybrid SCM system in OCDMA compared to the conventional OCDMA system. This is because increasing the number of users for hybrid SCM system does not affects the number of code length and the number of optical codes but only increase the number of subcarriers. Thus, hybrid SCM OCDMA system has to increase spectral efficiency and produce better performance compared to conventional of OCDMA system.

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“…OCDMA is an optical-based multiple-access method which can transmit the data simultaneously from several users over the network and can be distinguished by its signature of the code based on specific detection. In addition, OCDMA scheme is good in combining the unlimited bandwidth of fiber with the flexibility of CDMA technique to accomplish high-quality transmission without overwhelming the traffic management or system synchronization [1]. Besides that, OCDMA also have numerous advantages.…”

Section: Introductionmentioning

confidence: 99%

Analysis of hybrid subcarrier multiplexing of OCDMA based on single photodiode detection

et al. 2017

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Abstract. This paper analyzes the performance of subcarrier multiplexing (SCM) of spectral amplitude coding optical code multiple access (SAC-OCDMA) by applying Recursive Combinatorial (RC) code based on single photodiode detection (SPD). SPD is used in the receiver part to reduce the effect of multiple access interference (MAI) which contributes as a dominant noise in incoherent SAC-OCDMA systems. Results indicate that the SCM OCDMA network performance could be improved by using lower data rates and higher number of weight. Total number of users can also be enhanced by adding lower data rates and higher number of subcarriers.

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Enhanced Performance of SAC-OCDMA System based on SPD Detection Utilizing EDFA for Access Networks

Cited by 14 publications

References 11 publications

Enhanced Spectral Amplitude Coding OCDMA System Utilizing a Single Photodiode Detection

Enhanced Spectral Amplitude Coding OCDMA System Utilizing a Single Photodiode Detection

Comparison between Conventional OCDMA and Subcarrier Multiplexing SAC OCDMA System Based on Single Photodiode Detection

Analysis of hybrid subcarrier multiplexing of OCDMA based on single photodiode detection

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