| Project/Area Number |
12650362
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
情報通信工学
|
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| Research Institution | Saitama University |
|---|
Principal Investigator |
YASHIMA Hiroyuki Saitama Univ., Dept. of Inf. and Comp., Associate Professor, 工学部, 助教授 (30230197)
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| Project Period (FY) |
2000 – 2002
|
| Project Status |
Completed (Fiscal Year 2002)
|
| Budget Amount *help |
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2000: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Optical CDMA / Time Hopping / Multimedia / 光通信 / 多重通信 |
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| Research Abstract |
We have investigated multimedia optical CDMA (Code Division Multiple Access). We propose Time Hopping Optical CDMA with optical power control, We derive the performance of the proposed system and show that the proposed system achieves good performance with large simultaneous users and various bit rate.
We also investigate a Frequency Domain Encoding CDMA (FE-CDMA) communication systems. In FE-CDMA, a liquid crystal phase modulator (LCM) can be used as a pseudorandom spatially phase mask. The effect of the degree of modulation of LCM is investigated. We derive the bit error rate (BER) and show that the BER significantly degrades as the degree of modulation changes.
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