出版社：University of Malaya * Faculty of Computer Science and Information Technology
摘要：A new code structure based on DoubleWeight (DW) code families is proposed for SpectralAmplitudeCoding Optical Code Division Multiple Access (OCDMA) system. The constraint of a constant weight of 2 for the DW code can be relaxed using a mapping technique. By using this technique, codes that have a larger number of weight can be developed. Modified DoubleWeight (MDW) Code is another variation of a DW code family that can has a variable weight greater than two. The MDW code possesses ideal crosscorrelation properties and exists for every natural number n. A much better performance can be provided by using the MDW code compared to the existing codes such as Hadamard and Modified FrequencyHopping (MFH) codes. This has been demonstrated from the theoretical analysis and simulation.
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