Three-dimensional multi-diagonal codes for OCDMA system

Jellali, Nabiha; Najjar, Monia; Ferchichi, Moez; Rezig, Houria

doi:10.1016/j.ijleo.2017.07.057

Cited by 20 publications

(12 citation statements)

References 12 publications

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“…Substituting eq (6) in (7), to total power incident at the of PD and the resulting photocurrent will be…”

Section: Direct Detection Systemmentioning

confidence: 99%

“…As a result, the spectrum's appearance changes in such a way that only the intended recipient can recognize it [4][5]. For OCDMA, several codes have been proposed [6][7][8][9]. Unlike traditional multiple access techniques such as wavelength division multiple access (WDMA) and time division multiple access (TDMA) [10], the total number of these slots determines the maximum transmission capacity, whereas optical CDMA transmission capacity is dependent on the number of users actively using network [11][12].…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of Spectral Amplitude Coding Methods in Fiber Optical Communication System

Abusale¹,

Karabulut²,

İlhan³

2023

Preprint

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<p>This study analyzes optical code division multiplexed access system coding with two different types of spectral amplitude coding (SAC): Double Weight (DW) codes and Multiple Diagonal (MD) codes. These two encoding types differ in code structure and channel bandwidth length (the number of wavelengths representing the channel's bandwidth), as well as Q-Factor, BER, and MAI values. This study analyzes systems with different number of users over single-mode optical fiber and presents a comparison of both. DW codes have a shorter length code than MD codes, and although this technique can generate unique code words for each user, it will break the system using MD encoding. This is another reason to increase bandwidth for MD codes. </p>

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“…Substituting eq (6) in (7), to total power incident at the of PD and the resulting photocurrent will be…”

Section: Direct Detection Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Spectral Amplitude Coding Methods in Fiber Optical Communication System

Abusale¹,

Karabulut²,

İlhan³

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Substituting eq (6) in (7), to total power incident at the of PD and the resulting photocurrent will be…”

Section: Direct Detection Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Spectral Amplitude Coding Methods in Fiber Optical Communication System

Abusale¹,

Karabulut²,

İlhan³

2023

Preprint

View full text Add to dashboard Cite

<p> This study analyzes optical code division multiplexed access system coding with two different types of spectral amplitude coding (SAC): Double Weight (DW) codes and Multiple Diagonal (MD) codes. These two encoding types differ in code structure and channel bandwidth length (the number of wavelengths representing the channel's bandwidth), as well as Q-Factor, BER, and MAI values. This study analyzes systems with different number of users over single-mode optical fiber and presents a comparison of both. DW codes have a shorter length code than MD codes, and although this technique can generate unique code words for each user, it will break the system using MD encoding. This is another reason to increase bandwidth for MD codes. </p>

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“…To address these shortcomings, numerous three-dimensional (3D) algorithms for (spectral/time/spatial) and (time/wavelength/polarization) encoding have been investigated. 6,[17][18][19][20][21] Over the last few years, massive expansion in WOC technology has been observed due to huge advances in optoelectronic components and tremendous growth in the market offering wireless optical device. 22,23 In present years, wireless optical communication (WOC) is presently regarded as the upcoming generation of wireless optical networks due to its positive aspects compared to radiofrequency (RF) transmission systems, such as high-speed broadband, ease of installation, low power consumption, etc.…”

Section: Introductionmentioning

confidence: 99%

Massive capacity of novel three‐dimensional OCDMA‐FSO system for next generation of high‐data wireless networks

Rahmani,

Sabri,

Cherifi

et al. 2023

Trans Emerging Tel Tech

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The present study examines an interesting wireless system known as spectral/temporal/spatial‐optical code division multiple access‐free space optics (OCDMA‐FSO) by integrating the new three‐dimensional successive weight (3D‐SW) code for the incoherent system. The system is proposed to be adopted in future generations of wireless networks in view of its attractive features such as simple architecture, high data rate, strong immunity against electromagnetic interference, and optimal power consumption. Furthermore, the recommended code has a zero cross‐correlation (ZCC) feature that removes multiple access interference (MAI) and lowers the effect of phase‐induced intensity (PIIN) noise, which primarily affects OCDMA performance. Meanwhile, an original bit error rate (BER) formulation based on the signal‐to‐noise ratio (SNR) calculation has been developed. The computational results clarified that a recommended approach improves optical system efficacy by boosting numerous analytical criteria. Firstly, the numerical outcomes exhibit that the proposed system improves cardinality by 3.67, 3.08, 2.19, and 5 times than the systems using three‐dimensional perfect difference (3D‐PD), both three‐dimensional perfect difference/multi diagonal (3D‐PD/MD) and three‐dimensional‐dynamic cyclic shift/multi diagonal (3D‐DCS/MD), two‐dimensional‐SW, and one‐dimensional‐SW codes, respectively. Further, It saves roughly −7.3 dBm and − 4.2 dBm when moving from (1D) and (2D) to (3D). Second, the implementation of the proposed model under Optisystem software reveals that the system is compatible with optical communication norms and can be used in upcoming generations of wireless networks, where it achieves BER of with better transmission quality reaching 12.09 at a high bit rate until 30 Gbps across a wireless distance up to 6 km.

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Three-dimensional multi-diagonal codes for OCDMA system

Cited by 20 publications

References 12 publications

Performance Analysis of Spectral Amplitude Coding Methods in Fiber Optical Communication System

Performance Analysis of Spectral Amplitude Coding Methods in Fiber Optical Communication System

Performance Analysis of Spectral Amplitude Coding Methods in Fiber Optical Communication System

Massive capacity of novel three‐dimensional OCDMA‐FSO system for next generation of high‐data wireless networks

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