2011 Fiscal Year Final Research Report
Evaluation and Implementation of Parallel Optical Wireless Communication System for Shifting of Optical Axis
| Project/Area Number |
21760294
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Communication/Network engineering
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| Research Institution | Yamaguchi University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Keywords | 光無線通信 / 光軸ずれ / スペクトル拡散 / 光ZCZ符号 / ZCZ-CDMA方式 / マッチドフィルタ / FPGA / LED |
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| Research Abstract |
In this research, I verified that this system can suppress co-channel interference and interference by shifting of optical axis by data multiplex transmission experiment of optical code division multiple access(OCDMA) system using optical zero-correlation zone(ZCZ) codes which is called optical ZCZ-CDMA system, consisting of a infrared light emitting diode(LED), an avalanche photo diode(APD) module and field programmable gate array(FPGA) boards corresponding to 400,000 logic gates. As a result of data transmission experiment, optical ZCZ-CDMA system can suppress co-channel interference, but can' t remove completely co-channel interference, and interference by shifting of optical axis is suppressed from about-30 to 30 degrees.
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