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The authors present a new family of spreading sequences called Manchester-coded modified-Legendre codes. The new sequences are suitable for both single and multi-rate optical code-division multiplexing/multiple-access (OCDM/A) systems. Also, the implementation of proposed sequences on spectral-amplitude coding-based OCDM system is presented. The encoders use complementary encoding and common zero-code...
Optical code division multiple access multiple (OCDMA) is considered as the strongest candidates for the future ultra-high speed optical networks due to the huge bandwidth offered by the system. However, multiple access interference (MAI) which is originated from other simultaneous users is the major reason for the system degradation in the OCDMA systems. MAI increases with the number of simultaneous...
In this paper the double weight code (DW) family which is used as a proposed code in optical spectral code division multiple access system (OSCDMA) has been studied using the modified double weight code (MDW) which has across correlation value equals to one. By eliminating the intersection columns of this code we can reduce the cross correlation value from one to zero. This code is named zero cross-correlation...
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