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应用科学学报 ›› 2009, Vol. 27 ›› Issue (6): 569-573.

• 通信工程 • 上一篇    下一篇

航空信道统计模型的改进与实现

朱秋明1， 徐大专1， 吕卫华2， 陈小敏1   

  1. 1. 南京航空航天大学信息科学与技术学院，南京210016
    2. 中国空空导弹研究院，河南洛阳417009
  • 收稿日期:2009-05-12 修回日期:2009-09-30 出版日期:2009-11-25 发布日期:2009-11-30
  • 作者简介:朱秋明，博士生，研究方向：无线通信、信道建模与估计等，E-mail: zhuqiuming@nuaa.edu.cn; 徐大专，博士，教授，博导，研究方向： 无线通信、空时编码、自动测试技术等，E-mail: xudazhuan@nuaa.edu.cn
  • 基金资助:

    江苏省自然科学基金(No. BK2007192)资助项目

Modified Stochastic Model of Aeronautical Channel

ZHU Qiu-ming1, XU Da-zhuan1, Lü Wei-hua2, CHEN Xiao-min1   

  1. 1. College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics,
    Nanjing 210016, China
    2. The Academe of Air-to-Air Missile of China, Luoyang 417009, Henan Province, China
  • Received:2009-05-12 Revised:2009-09-30 Online:2009-11-25 Published:2009-11-30

PDF

2328

被引次数

21

摘要：

证明了基于谐波信号叠加产生独立且具有部分U型多普勒功率谱的复高斯随机过程时各支路多普勒频率的约
束条件. 基于该条件提出一种最佳入射角的设计方案，将入射角分为随机和固定取值两部分，不但保证了相位的随机均
匀分布，而且满足多普勒频率的约束条件. 利用改进的谐波信号叠加方法和等效离散时间模型实现了多径环境下航空信
道小尺度衰落的统计建模. 理论分析和仿真结果表明，该仿真模型的多普勒功率谱和时延功率谱等统计参数均与参考模
型一致.

关键词: 航空信道模型, 小尺度衰落, 谐波信号叠加

Abstract:

The sum-of-sinusoids (SoS) method has been widely used for creating complex Gaussian processes.
Restriction of each echo’s Doppler frequency is proved, which confirms the generated processes are mutually uncorrelated
and have a part of U shaped Doppler power spectrum (DPS). An improved SoS method based on optimal
angle of arrival (AoA) is then proposed. The optimal AoA consists of a deterministic part and a random part.
This confirms that the uniform distribution of phase and the Doppler frequency meet the restrictions. With the
new method and the equivalent discrete-time model, a modified aeronautical channel model for small-scale fading
is presented. Analysis and simulation results show that the DPS and time delay power spectrum of the simulation
model as agree with the reference model.

Key words: aeronautical channel model, small-scale fading, sum-of-sinusoids

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