A divided spectrum balanced detection technique for intensity noisereduction in SAC OCDMA systems
In this paper we propose a simple divided spectrum balanced detection (DSBD) for spectral amplitudecoding (SAC) optical code division multiple access (OCDMA) systems. SAC OCDMA systems are limited byphase induced intensity noise (PIIN), which is a signal dependent source of noise. Our proposed techn...
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| Main Authors: | , , , |
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| Format: | Citation Index Journal |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://eprints.utp.edu.my/10796/1/1-s2.0-S0030402613006645-main.pdf__tid%3Dadb68b1e-4fea-11e3-ac80-00000aab0f01%26acdnat%3D1384735690_8c7c8057359fd9313ee97015a656314b http://eprints.utp.edu.my/10796/ |
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| Summary: | In this paper we propose a simple divided spectrum balanced detection (DSBD) for spectral amplitudecoding (SAC) optical code division multiple access (OCDMA) systems. SAC OCDMA systems are limited byphase induced intensity noise (PIIN), which is a signal dependent source of noise. Our proposed techniquereduces the PIIN by dividing the spectrum of the signal into two or more, and detecting each spectrumby a different photodiode. The DSBD scheme reduces the detected optical power at photodetection, thusresulting in a higher mitigation of the PIIN. Theoretical results show that DSBD demonstrate noticeableimprovement over traditional balanced detection technique, for example an up to 33% increase in thenumber of active users can be achieved, and at least 1 × 10−3b/s Hz increase in the spectral efficiency isobtained. However, the SDBD is more complex and append more constrains on system components |
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