Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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Research Abstract |
In this research, we propose new optical codedivision-multiple-access (OCDMA) systems using the extended chaotic binary codes (ECBCs) obtained easily from the extended Bernoulli map. Unlike conventional sequence codes, the ECBCs are composed by the map for every information bit, which means that the sequence code varies bit by bit. Therefore, high security against eavesdropping is expected. Then, we derive the expression for theoretical BER versus the number of simultaneous users of the proposed system and verify that the proposed system is effective in OCDMA system through numerical results.
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