Analysis of effective capacity for free-space optical communication systems over gamma-gamma turbulence channels with pointing errors

To facilitate the efficient support of quality-of-service （QoS） for promising free-space optical （FSO） communication systems, it is essential to model and analyze FSO channels in terms of delay QoS. However, most existing works focus on the average capacity and outage capacity for FSO, which are not...

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Published inOptoelectronics letters Vol. 11; no. 3; pp. 213 - 216
Main Author 杨友全 迟学芬 石佳琳 赵琳琳
Format Journal Article
LanguageEnglish
Published Tianjin Tianjin University of Technology 01.05.2015
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
伽玛
光通信系统
大气湍流
指向误差
有效容量
服务质量
自由空间光
误差分析
Effective Capacity
Outage Capacity
Refractive Index Structure Parameter
Rytov Variance
Atmospheric Turbulence Condition
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ISSN1673-1905
1993-5013
DOI10.1007/s11801-015-5038-6

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Summary:To facilitate the efficient support of quality-of-service （QoS） for promising free-space optical （FSO） communication systems, it is essential to model and analyze FSO channels in terms of delay QoS. However, most existing works focus on the average capacity and outage capacity for FSO, which are not enough to characterize the effective transmission data rate when delay-sensitive service is applied. In this paper, the effective capacity of FSO communication systems under statistical QoS provisioning constraints is investigated to meet heterogeneous traffic demands. A novel closed-form expression for effective capacity is derived under the combined effects of atmospheric turbulence conditions, pointing errors, beam widths, detector sizes and QoS exponents. The obtained results reveal the effects of some significant parameters on effective capacity, which can be used for the design of FSO systems carrying a wide range of services with diverse QoS requirements.
Bibliography:To facilitate the efficient support of quality-of-service （QoS） for promising free-space optical （FSO） communication systems, it is essential to model and analyze FSO channels in terms of delay QoS. However, most existing works focus on the average capacity and outage capacity for FSO, which are not enough to characterize the effective transmission data rate when delay-sensitive service is applied. In this paper, the effective capacity of FSO communication systems under statistical QoS provisioning constraints is investigated to meet heterogeneous traffic demands. A novel closed-form expression for effective capacity is derived under the combined effects of atmospheric turbulence conditions, pointing errors, beam widths, detector sizes and QoS exponents. The obtained results reveal the effects of some significant parameters on effective capacity, which can be used for the design of FSO systems carrying a wide range of services with diverse QoS requirements.
12-1370/TN
YANG You-quan , CHI Xue-fen,SHI Jia-lin , ZHAO Lin-lin （ College of Communications Engineering, Jilin University, Changchun 130012, China）
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-015-5038-6