Dynamic decision threshold and adaptive coherent detection in FSO communication system

Zixiong Wang; Wen De Zhong; Changyuan Yu

doi:10.1109/ICICS.2011.6174253

Dynamic decision threshold and adaptive coherent detection in FSO communication system

Zixiong Wang, Wen De Zhong, Changyuan Yu

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

In this paper, we first compare the bit error rate (BER) performance of OOK FSO transmission systems under noncoherent and coherent detections. With coherent detection, BER of 109can be achieved under different atmospheric turbulence scenarios from weak to strong. In addition, we propose a dynamic decision threshold scheme to further improve the performance of coherent detection, where the decision threshold is varied in every sub-millisecond time slot. It is found that when the power of local oscillator is 8dBm, dynamic decision threshold scheme provides a 4.0dB power reduction in achieving BER of 109towards traditional fixed decision threshold scheme. In addition, we propose an adaptive coherent detection in FSO system, where a high power-local oscillator (LO) is used to mitigate the deep fading while a low power-LO is to mitigate the rest fading scenarios. Result shows that the outage probability is reduced completely and the average power is only 10% of the high power-LO

Original language	English
Title of host publication	ICICS 2011 - 8th International Conference on Information, Communications and Signal Processing
DOIs	https://doi.org/10.1109/ICICS.2011.6174253
Publication status	Published - 1 Dec 2011
Externally published	Yes
Event	8th International Conference on Information, Communications and Signal Processing, ICICS 2011 - Singapore, Singapore Duration: 13 Dec 2011 → 16 Dec 2011

Conference

Conference	8th International Conference on Information, Communications and Signal Processing, ICICS 2011
Country/Territory	Singapore
City	Singapore
Period	13/12/11 → 16/12/11

Keywords

adaptive coherent detection
dynamic decision threshold
free-space optical (FSO)

ASJC Scopus subject areas

Computer Networks and Communications
Information Systems
Signal Processing

More information

10.1109/ICICS.2011.6174253

Cite this

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title = "Dynamic decision threshold and adaptive coherent detection in FSO communication system",

abstract = "In this paper, we first compare the bit error rate (BER) performance of OOK FSO transmission systems under noncoherent and coherent detections. With coherent detection, BER of 109can be achieved under different atmospheric turbulence scenarios from weak to strong. In addition, we propose a dynamic decision threshold scheme to further improve the performance of coherent detection, where the decision threshold is varied in every sub-millisecond time slot. It is found that when the power of local oscillator is 8dBm, dynamic decision threshold scheme provides a 4.0dB power reduction in achieving BER of 109towards traditional fixed decision threshold scheme. In addition, we propose an adaptive coherent detection in FSO system, where a high power-local oscillator (LO) is used to mitigate the deep fading while a low power-LO is to mitigate the rest fading scenarios. Result shows that the outage probability is reduced completely and the average power is only 10% of the high power-LO",

keywords = "adaptive coherent detection, dynamic decision threshold, free-space optical (FSO)",

author = "Zixiong Wang and Zhong, {Wen De} and Changyuan Yu",

year = "2011",

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doi = "10.1109/ICICS.2011.6174253",

language = "English",

isbn = "9781457700309",

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note = "8th International Conference on Information, Communications and Signal Processing, ICICS 2011 ; Conference date: 13-12-2011 Through 16-12-2011",

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Wang, Z, Zhong, WD & Yu, C 2011, Dynamic decision threshold and adaptive coherent detection in FSO communication system. in ICICS 2011 - 8th International Conference on Information, Communications and Signal Processing., 6174253, 8th International Conference on Information, Communications and Signal Processing, ICICS 2011, Singapore, Singapore, 13/12/11. https://doi.org/10.1109/ICICS.2011.6174253

Dynamic decision threshold and adaptive coherent detection in FSO communication system. / Wang, Zixiong; Zhong, Wen De; Yu, Changyuan.
ICICS 2011 - 8th International Conference on Information, Communications and Signal Processing. 2011. 6174253.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

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AU - Wang, Zixiong

AU - Zhong, Wen De

AU - Yu, Changyuan

PY - 2011/12/1

Y1 - 2011/12/1

N2 - In this paper, we first compare the bit error rate (BER) performance of OOK FSO transmission systems under noncoherent and coherent detections. With coherent detection, BER of 109can be achieved under different atmospheric turbulence scenarios from weak to strong. In addition, we propose a dynamic decision threshold scheme to further improve the performance of coherent detection, where the decision threshold is varied in every sub-millisecond time slot. It is found that when the power of local oscillator is 8dBm, dynamic decision threshold scheme provides a 4.0dB power reduction in achieving BER of 109towards traditional fixed decision threshold scheme. In addition, we propose an adaptive coherent detection in FSO system, where a high power-local oscillator (LO) is used to mitigate the deep fading while a low power-LO is to mitigate the rest fading scenarios. Result shows that the outage probability is reduced completely and the average power is only 10% of the high power-LO

AB - In this paper, we first compare the bit error rate (BER) performance of OOK FSO transmission systems under noncoherent and coherent detections. With coherent detection, BER of 109can be achieved under different atmospheric turbulence scenarios from weak to strong. In addition, we propose a dynamic decision threshold scheme to further improve the performance of coherent detection, where the decision threshold is varied in every sub-millisecond time slot. It is found that when the power of local oscillator is 8dBm, dynamic decision threshold scheme provides a 4.0dB power reduction in achieving BER of 109towards traditional fixed decision threshold scheme. In addition, we propose an adaptive coherent detection in FSO system, where a high power-local oscillator (LO) is used to mitigate the deep fading while a low power-LO is to mitigate the rest fading scenarios. Result shows that the outage probability is reduced completely and the average power is only 10% of the high power-LO

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KW - free-space optical (FSO)

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BT - ICICS 2011 - 8th International Conference on Information, Communications and Signal Processing

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Dynamic decision threshold and adaptive coherent detection in FSO communication system

Abstract

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Keywords

ASJC Scopus subject areas

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