A high efficiency construction method of multilength optical orthogonal codes with correlation constraint two for OCDMA multimedia network |
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| Authors: | Xiaobin Li Lizhi Lu Rongxin Wan |
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| Institution: | 1. Shenzhen Key Lab of Advanced Communications and Information Processing, Shenzhen University, China;2. College of Information Engineering, Shenzhen University, Shenzhen 518060, China |
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| Abstract: | In order to construct multilength optical orthogonal codes (ML OOCs) with correlation constraint 2 for multi-rate OCDMA passive optical networks, a high efficiency construction method is presented. The main idea is to construct high efficiency mapping sequences to map optimal short length OOCs with cross correlation 2 into long length OOCs with cross correlation 2. Fundamental of constructing high efficiency mapping sequence is derived, and the mapping sequences based on multiplication table of integer domain is examined. Simulations based on the method show that the cardinality of long length OOCs is just slightly lower than Johnson bound. Therefore, it has very high variable length efficiency. |
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| Keywords: | Optical code division multiple access (OCDMA) Optical orthogonal codes (OOCs) Multilength code |
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