| 机舱环境路径损耗和功率覆盖特征分析 |
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| 引用本文： | 肖亮,庞文镇,康姗,肖立民,张焱.机舱环境路径损耗和功率覆盖特征分析[J].电波科学学报,2012(1):24-29. |
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| 作者姓名： | 肖亮 庞文镇 康姗 肖立民 张焱 |
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| 作者单位： | 厦门大学通信工程系;清华信息科学与技术国家实验室;清华大学电子工程系 |
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| 基金项目： | 国家科技重大专项课题(2009ZX03007-003-02);国家重点基础研究发展规划项目资助(2012CB316002);国家863项目资助(2009AA011501);国家科技合作项目(编号:2010DFB10410);清华-高通联合研究计划资助;长江学者和创新团队发展计划资助;中国博士后科学基金;国家自然科学基金(61001072);福建自然科学基金计划资助项目(2010J01347);清华大学资助科研计划(20111081025) |
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| 摘 要： | 针对典型机舱内无线信道的实际测量数据,分析了中心频率3.52GHz的无线信号在机舱环境下的路径损耗特征,统计了机舱中不同位置的路径损耗因子、截距和最小均方误差,为建立机舱内无线信道模型提供了参考。比较了分布式系统和集中式系统在机舱内的功率覆盖情况,分析结果表明:在机舱环境中,当发射功率相同时,分布式系统比集中式系统有着更均匀的功率覆盖效果,且能够更充分地利用发射功率。
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| 关 键 词： | 路径损耗 分布式系统 集中式系统 功率覆盖 |
Characteristics of path loss and power coverage in cabin environment |
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| XIAO Liang,PANG Wen-zhen,KANG Shan,XIAO Li-min,ZHANG Yan.Characteristics of path loss and power coverage in cabin environment[J].Chinese Journal of Radio Science,2012(1):24-29. |
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| Authors: | XIAO Liang PANG Wen-zhen KANG Shan XIAO Li-min ZHANG Yan |
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| Affiliation: | 1.Department of Electronic Engineering,Xiamen University,Xiamen Fujian 361005,China; 2.National Laboratory for Information Science and Technology, Tsinghua University,Beijing 100084,China;3.Department of Electronic Engineering, Tsinghua University,Beijing 100084,China) |
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| Abstract: | In view of the actual measured data in typical aircraft environment using the channel sounder systems,the path loss characteristics in cabin environment at the center frequency 3.52 GHz are analyzed from the measured data of an aircraft.The parameters includ path-loss exponent,intercept and minimum mean square error in different measured positions.These results provids a reference to the establishment of the in-cabin wireless channel model.The power coverage in the distributed antennas systems(DAS)and the centralized antennas systems(CAS)is compared.It is proved that,with equal transmitting power,the DAS has a better uniform power coverage and better availability of the transmitting power than CAS in-cabin environment. |
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| Keywords: | path loss distributed antennas systems(DAS) centralized antennas systems(CAS) power coverage |
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