New Code Structure for Enhanced Double Weight (EDW) Code for Spectral Amplitude Coding OCDMA System

Zahid, Ali Z. Ghazi; Hasoon, Feras N.; Shaari, Sahbudin

doi:10.1109/icfcc.2009.26

Cited by 14 publications

(3 citation statements)

References 6 publications

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“…EDW code is able to deliver better security with short code length, but there exists a cross correlation of 1. [25][26][27][28][29][30] Extensive literature survey makes us familiar with the challenges in the SAC-OCDMA systems, and it is perceived that there is peer pressure on the aforementioned system to deliver and cater high data rate services along with large cardinality due to a large number of users. Generally, the performance of the systems depends on the nature of OCDMA code and number of users.…”

Section: Introductionmentioning

confidence: 99%

Review on developments in all-optical spectral amplitude coding techniques

Kaur

Singh

2018

Opt. Eng.

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The focus of this work is to consolidate a review of accomplished research in the field of optical code division multiple accesses (OCDMA), to outline the state-of-the-art comparison, and to recognize the prominent trends as well as limitations. Code division multiple access (CDMA) has prospered as a vital solution for numerous applications such as cellular mobile communication-based wireless network technology and wired/wireless local area networks that include areas of unlicensed industry, medicine, and science. Due to the commercial utilization of the various advantages of CDMA, it has raised the matter of whether optical technology reliant communications provide the noteworthy advantages to optical networks as well as what are the technologies that facilitate optical chip-based (code division) networks. Aforementioned matter has been addressed in the context of the incorporation of OCDMA in the systems through several experiments of laboratory-based test-bed investigations, field trials, and simulation analysis of multiple users in the recent research works. The performance of OCDMA has an edge over wavelength division multiplexing and offers an unmatched capacity that is seen through simulations. To cater the explosive expansions in internet application, different spectral amplitude codes have been proposed till now. We present a review of the different spectral amplitude codes based on the reported works in spectral amplitude code OCDMA systems. For the purpose of state-of-the-art comparison, parameters considered are data speeds, advanced modulation formats, bit error rate, extinction ratio, decision algorithms, photonic efficiencies of photodetectors, frequency bands, signal-to-noise ratio, forward error correction, photodetector noises, etc., and simulations are carried out in similar input environments. We explore the advantages/limitations of the spectral amplitude codes, recent progress in the technology, practical works on spectral amplitude coding (SAC) throughout the world, encryption-decryption techniques, all-optical methods, literature comparison, future scope, and applications of the SAC-OCDMA codes.

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Section: Introductionmentioning

confidence: 99%

Review on developments in all-optical spectral amplitude coding techniques

Kaur

Singh

2018

Opt. Eng.

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“…Different code construction algorithms for SAC-OCDMA are reported. Some of them are: modified quadratic congruence codes [9], optical orthogonal codes (OOCs) based constructions [10], double weight (DW) code families [11][12][13], fixed right shifting code [14], matrix partitioning (MP), generalised MP code [15], enhanced multi-diagonal code [16] and many others exist.…”

Section: Introductionmentioning

confidence: 99%

Design of Variable Weight code for multimedia service in SAC–OCDMA systems

Kumawat

Kumar

2018

IET Optoelectronics

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“…The coding/decoding scheme is achieved by controlling the voltage of the corresponding LC cells to be 4 or 0 V based on "1" or "0" code in code chips, respectively. In the experiment for the proposed SAC-OCDM/TDM PON, we choose the enhanced double weight code as the code address [11] . The code length is 45, and the code weight is 9.…”

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confidence: 99%

SAC-OCDM/TDM system for upgrading the TDM PON

Chen¹,

Xiao²,

Yi³

et al. 2011

中国光学快报

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A spectral amplitude coded-optical code division multiplexing time division multiplexing (SAC-OCDM/TDM) passive optical network (PON) for upgrading the traditional TDM PON is proposed. To the best of our knowledge, our work is the first to report on the use of both spectral and orthogonal code domains, which are transparent to optical network unit (ONU) for hybrid PON, in order to upgrade TDM PON seamlessly. The fewer encoder/decoders and cheaper optical source under the conditions of high bite rate and large ONU accommodation make the system cost-effective. A downstream experiment is demonstrated, and the results demonstrate that the proposed system is feasible.

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New Code Structure for Enhanced Double Weight (EDW) Code for Spectral Amplitude Coding OCDMA System

Cited by 14 publications

References 6 publications

Review on developments in all-optical spectral amplitude coding techniques

Review on developments in all-optical spectral amplitude coding techniques

Design of Variable Weight code for multimedia service in SAC–OCDMA systems

SAC-OCDM/TDM system for upgrading the TDM PON

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