Design of new hybrid wavelength hopping/time spreading codes for optical CDMA by combining OCC and BIBD ZCC codes

Kandouci, C.; Djebbari, Ali

doi:10.1016/j.ijleo.2017.01.006

Cited by 11 publications

(2 citation statements)

References 15 publications

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“…A new family of 2D hybrid W-T code was proposed by Kandouci et al [ 14 ], by combining OCC and balanced incomplete block design zero cross-correlation (BIBD-ZCC) codes. The 2D hybrid code provides both off-peak auto-correlation and cross-correlation features with time-spreading and wavelength-hopping patterns.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Permutation Vectors’ (PV) Code for Optical Code Division Multiple Access Systems

Ahmed

Zeghid

Imtiaz

et al. 2020

Entropy

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In this paper, we present a new algorithm to generate two-dimensional (2D) permutation vectors’ (PV) code for incoherent optical code division multiple access (OCDMA) system to suppress multiple access interference (MAI) and system complexity. The proposed code design approach is based on wavelength-hopping time-spreading (WHTS) technique for code generation. All possible combinations of PV code sets were attained by employing all permutations of the vectors with repetition of each vector weight (W) times. Further, 2D-PV code set was constructed by combining two code sequences of the 1D-PV code. The transmitter-receiver architecture of 2D-PV code-based WHTS OCDMA system is presented. Results indicated that the 2D-PV code provides increased cardinality by eliminating phase-induced intensity noise (PIIN) effects and multiple user data can be transmitted with minimum likelihood of interference. Simulation results validated the proposed system for an agreeable bit error rate (BER) of 10−9.

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Section: Introductionmentioning

confidence: 99%

Two-Dimensional Permutation Vectors’ (PV) Code for Optical Code Division Multiple Access Systems

Ahmed

Zeghid

Imtiaz

et al. 2020

Entropy

View full text Add to dashboard Cite

show abstract

“…It provides simplicity in all optical systems implementation [1], accurate time of arrival measurements, flexibility of user allocation, ability to support variable bit rate, busty traffic and security against unauthorized users [2]. A key limitation of this technology is the coding scheme.…”

Section: Introductionmentioning

confidence: 99%

New catenated OFDM modulation scheme in zero cross correlation OCDMA at various number of user and effective power

et al. 2017

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Abstract. This paper proposes an integration of optical Code Division Multiple Access (OCDMA) with new catenated Orthogonal Frequency Division Multiplexing (OFDM) modulation scheme. This effective combination based on Zero Cross Correlation (ZCC) code can enhanced the system capacity and increased spectral efficiency by fully utilizing the available electrical bandwidth. We investigate the performance of the proposed system for various number of user, number of weight and effective power. The performance assessment is carried out by means of the signal to noise ratio (SNR) and bit error rate (BER) for up to five catenated OFDM bands transmitted simultaneously through optical link at 622 Mbps. More specifically, mathematical expressions for SNR and BER performance are derived. The corresponding numerical results are presented and compared with traditional OCDMA-ZCC system to verified the feasibility of the proposed system. The results show that with OCDMA/catenated-OFDM based on ZCC code provides 86% more number of permissible user for SNR of 15 dB. In addition, this integration provides higher receiver sensitivity; an approximately -22.5 dBm for 20 number of user with 8 number of weight. It is also found that, to accommodate more user, the system requires higher effective power at the receiver.

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An efficient 2D encoding/decoding technique for optical communication system based on permutation vectors theory

et al. 2020

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Design of new hybrid wavelength hopping/time spreading codes for optical CDMA by combining OCC and BIBD ZCC codes

Cited by 11 publications

References 15 publications

Two-Dimensional Permutation Vectors’ (PV) Code for Optical Code Division Multiple Access Systems

Two-Dimensional Permutation Vectors’ (PV) Code for Optical Code Division Multiple Access Systems

New catenated OFDM modulation scheme in zero cross correlation OCDMA at various number of user and effective power

An efficient 2D encoding/decoding technique for optical communication system based on permutation vectors theory

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