Optical CDMA using time varying code and long code
Project/Area Number |
19560396
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Communication/Network engineering
|
Research Institution | Tokyo University of Science |
Principal Investigator |
HIROYUKI Yashima Tokyo University of Science, 工学部・第一部, 教授 (30230197)
|
Project Period (FY) |
2007 – 2009
|
Project Status |
Completed (Fiscal Year 2009)
|
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)
|
Keywords | 光CDMA / カオス / 光CDM |
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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Report
(4 results)
Research Products
(13 results)