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A New Family of Optical Code Sequences for Spectral-Amplitude-Coding Optical CDMA Systems

IEEE Photonics Technology Letters · 2004 · Vol. 16(10) · pp. 2383–2385

S. A. Aljunid✉(Universiti Putra Malaysia)Mahamod Ismail(National University of Malaysia)A. R. Ramli(Universiti Putra Malaysia)Borhanuddin Mohd Ali(Universiti Putra Malaysia)M.K. Abdullah(Universiti Putra Malaysia)

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Abstract

A new code structure for spectral-amplitude-coding optical code-division multiple-access system based on double-weight (DW) code families is proposed. The DW code has a fixed weight of two. By using a mapping technique, codes that have a larger number of weights can be developed. Modified double-weight (MDW) code is a DW code family variation that has variable weights of greater than two. The newly proposed code possesses ideal cross-correlation properties and exists for every natural number n. Based on theoretical analysis and simulation, MDW code is shown here to provide a much better performance compared to Hadamard and modified frequency-hopping codes.

graph theory and CDMA systems Coding theory and cryptography Wireless Communication Networks ResearchConstant-weight codeTernary Golay codeCyclic codeHadamard codePolynomial codeCode division multiple accessSystematic codePrefix codeCode (set theory)Hadamard transform

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267

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12.13

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99%

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References

Code division multiple-access techniques in optical fiber networks. I. Fundamental principles