Increasing Capacity and Suppress the Crosstalk by Using Hybrid Optical OFDM/WDM System

Aldhaibani, A. O.; Aljunid, S. A.; Fadhil, Hilal A.; Anuar,

doi:10.4028/www.scientific.net/kem.594-595.1041

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…A brief survey of literature in the area relevant to this paper is as follows. To Increasing Capacity and Suppress the crosstalk Aldhaibani et al [5] proposed a Hybrid optical OFDM/WDM system with 10Gb/s downstream for different modulation. Sahbudin et al [6] proposed the performance of SAC-OCDMA over the hybrid of FTTx-FSO network for the last mile users, The results reveal that the proposed SAC-OCDMA FTTx-FSO could support the maximum FSO range of 5.56, 3.6, 2.33, and 1.48 km for drizzle, light rain, medium rain and heavy rain, respectively, at the acceptable BER of 10 −9 .…”

Section: Related Workmentioning

confidence: 99%

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Alaoui¹,

Foshi²,

Zouine³

2019

IJECE

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<p>Radio over fiber technology will play an important role in solving problems facing wireless technology. Envisaging a global village, people could transmit and receive “anytime, anywhere, and anything”. In addition, the explosive growth in internet applications such as the World Wide Web, demonstrates the tremendous increase in bandwidth and low power that the coming world of multimedia interactive applications will require from future networks. ROF technology uses multicarrier modulation like orthogonal frequency division multiplexing (OFDM), which provides an opportunity of having an increased in bandwidth together with an affordable cost and this idea has recently become a suitable topic for many research works. On the other hand, SAC-OCDMA (Spectral Amplitude Coding Optical Code Division Multiple Access) technique is able to enhance the data rate of system and increase the number of user. In this paper we introduce a ROF link using a hybrid OFDM/SAC-OCDMA technique.</p>

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Section: Related Workmentioning

confidence: 99%

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Alaoui¹,

Foshi²,

Zouine³

2019

IJECE

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“…The academia and industry worldwide have been attracted by the RoF system field to investigate its different design applications and aspects. In (Abdullah Omar Ali et al, 2014) Wavelength Division Multiplexing (WDM) combined with Orthogonal Frequency Division Multiplexing (OFDM) in order to attain high capacity and longer distance for two channels at bit rate of 10Gbps with utilizing Quadrature Amplitude Modulation (QAM) and Phase Shift Keying (PSK) modulation technique. As a result, as a comparison with PSK modulation, high value of SNR obtained with QAM which SNR is 23 and 17dB for QAM and PSK respectively at 50km distance.…”

Section: Introductionmentioning

confidence: 99%

Capacity Enhancement of Radio over Fiber System Using Various Modulation Techniques

Ibrahim,

Atroshey

2023

UOD

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The recent decade is an era of the 5G and more communication system technology. It has a wide range of application which requires wide bandwidth and high speed of bit rate. Also, Radio frequency and optical fiber is combined in order to attain high capacity transmission at lower costs which Radio over Fiber (RoF) is being as present trend of large broadband communication. This study investigates the RoF-Dense Wavelength Division Multiplexing (DWDM) system in order to enhance the capacity and performance of the system, and simulation was done by using optisystem software 14. The goal of the study was to enhance the number of channels and data transmission rate which the performance of the system was extremely reduced. Hence, different modulation techniques including Frequency Modulation (FM), Phase Modulation (PM), Frequency Shift Keying (FSK), and Continuous Phase Frequency Shift Keying (CPFSK) were presented for the DWDM-RoF system for various sample channels including ch1, ch8, ch16, ch24, and ch32 respectively. In addition, the performance of proposed DWDM-RoF system enhanced, which optimum value of Q factor and minimum BER was attained with FM modulation techniques as a comparison with other modulation techniques including PM, FSK, and CPFSK respectively.

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Simulative Effect of Cyclic Prefix in Optical OFDM

Aldhaibani

Aljunid

Anuar

et al. 2014

AMM

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Orthogonal frequency division multiplexing (OFDM) is one of the Multi-Carrier Modulation (MCM) techniques that transmit signals through multiple carriers. These carriers (subcarriers) have different frequencies and they are orthogonal to each other. There are different parameters which alter the performance of OFDM system. In this paper, the effect of cyclic prefix length (CP) on optical (OFDM) system is investigated. Although employing a CP as the guard interval is a simple way to combat inter-symbol interference (ISI) and inter-carrier interference (ICI), it reduces the transmission efficiency of the system. The simulation results show the effect of CP length in power receiver, penalty of power and improved the performance based on signal to noise ratio (SNR). In addition, a tradeoff is needed between reduced interference effects and transmission efficiency.

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Increasing Capacity and Suppress the Crosstalk by Using Hybrid Optical OFDM/WDM System

Cited by 3 publications

References 5 publications

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Radio over fiber system based on a hybrid link for next generation of optical fiber communication

Capacity Enhancement of Radio over Fiber System Using Various Modulation Techniques

Simulative Effect of Cyclic Prefix in Optical OFDM

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