| 自适应编码调制技术在大气激光通信中的应用研究 |
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| 引用本文： | 舒芳,敖发良,孙丽华.自适应编码调制技术在大气激光通信中的应用研究[J].微计算机信息,2010(15). |
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| 作者姓名： | 舒芳 敖发良 孙丽华 |
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| 作者单位： | 桂林电子科技大学信息与通信学院; |
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| 基金项目： | 基金申请人:舒芳;项目名称:速度自适应LDPC码在混合FSO/RF通信链路中的应用研究;基金颁发部门:广西区教育厅(2008105950810M407) |
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| 摘 要： | 在大气激光通信中,采用固定编码调制方式的传输方案不能充分利用信道的时变特性,频带利用率较低。将自适应编码调制技术应用于大气激光通信中,针对当前的信道状态,选取合适的MCS,使系统的整体传输性能达到最优,满足高效可靠传输的目的。详细阐述了不同目标误包率下的信噪比门限值计算方法,仿真给出4种MCS下的自适应设计方案。结果表明:AMC技术可以在保证系统可靠传输的同时提高系统的频谱利用率;且随着目标误包率的降低,系统的平均频谱利用率降低。
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| 关 键 词： | 大气激光通信 自适应编码调制 脉冲编码调制 误码率 |
Applied Research of the AMC Technology in Atmospheric Laser Communication |
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| SHU Fang AO Fa-liang SUN Li-hua.Applied Research of the AMC Technology in Atmospheric Laser Communication[J].Control & Automation,2010(15). |
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| Authors: | SHU Fang AO Fa-liang SUN Li-hua |
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| Affiliation: | SHU Fang AO Fa-liang SUN Li-hua(School of Information , Communication Engineering,Guilin University of Electronic Technology,Guilin 541004,China) |
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| Abstract: | In the atmosphere laser communication,using of fixed-code modulation mode of transmission can not be fully reflected the time-varying channel characteristics,the frequency utilization is lower.This article applies Adaptive Coded Modulation technology to the atmospheric laser communications,the transmitter selects a suitable MCS according as the current channel state,allowing the system to achieve the overall transmission performance best and meet the purpose of highly efficient and reliable transmission.we ... |
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| Keywords: | Atmosphere Laser Communication Adaptive Modulation and Coding PPM BER |
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