基于随机桥过程的窄带信道多径衰落仿真研究

doi:10.11959/j.issn.1000-0801.2015010

电信科学 ›› 2015, Vol. 31 ›› Issue (2): 52-62.doi: 10.11959/j.issn.1000-0801.2015010

基于随机桥过程的窄带信道多径衰落仿真研究

刘磊¹,夏伟^1,²,韩江洪^1,³

¹ 合肥工业大学计算机与信息学院合肥 230009
² 蚌埠学院计算机科学与技术系蚌埠 233000
³ 教育部安全关键工业测控工程研究中心合肥 230009

出版日期:2015-02-20 发布日期:2017-03-18
基金资助:
国家自然科学基金资助项目;国家国际科技合作专项基金资助项目

Research on Simulation of Multi-Path Fading of Narrow-Band Channel Based on Stochastic Bridge

Lei Liu¹,Wei Xia^1,²,Jianghong Han^1,³

¹ School of Computer ＆Information, Hefei University of Technology, Hefei 230009, China
² Department of Computer Science and Technology,Bengbu University,Bengbu 233000, China
³ Engineering Research Center of Safety Critical Industrial Measurement ＆Control Technology, Ministry of Education, Hefei 230009, China

Online:2015-02-20 Published:2017-03-18
Supported by:
The National Natural Science Foundation of China;The Program of International Science and Technology Coopration of China

摘要/Abstract

摘要：

摘要：将多径分量仿真为随机射线的传播，其轨迹描述为随机桥过程的样本。研究随机射线在渗流网格中扩散的物理规律，以改进物理散射约束，使之有足够样本用于场强时延分布建模。通过实验，模拟不同波长的波束在不同散射体密度的渗流网格内的扩散，得出信道的相干带宽、误码率和场强的统计特征，验证了信号的多径衰落统计特征与相应的随机射线扩散程度有关，随机射线模型能够较大概率地仿真信号多径衰落的特性。

关键词: 渗流网格, 随机射线, 布朗桥, 多径衰落

Abstract:

The propagating stochastic rays were employed to simulated multi-path components（MPC）, which tracks were represented by samples of stochastic bridge processes. The laws of physics about stochastic ray diffusing in percolation lattices were studied to improve constraints of physical diffusion, which made it with enough samples to model power delay probability. According to experimental, different wavelengths of beam were simulated to diffuse in percolation lattices with different scatters density. Coherence bandwidths, bit error rate and statistics characteristics of power were acquired to verify that stochastic ray model can fit to the characteristics of the multi-path fading channel, which can predict channel parameters in specific locations.

Key words: percolation lattice, stochastic ray, brown bridge, multi-path fading

刘磊,夏伟,韩江洪. 基于随机桥过程的窄带信道多径衰落仿真研究[J]. 电信科学, 2015, 31(2): 52-62.

Lei Liu,Wei Xia,Jianghong Han. Research on Simulation of Multi-Path Fading of Narrow-Band Channel Based on Stochastic Bridge[J]. Telecommunications Science, 2015, 31(2): 52-62.

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参考文献 16

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p	k	2	3	4	5	6	7
0.8	D_k/m	13.5	19.9	26.3	32.5	33.7	44.8
	r/m	16.92	24.75	31.77	37.57	42.02	45.22
	k	8	9	10	11	12	13
	D_k/m	50.9	56.9	62.9	68.9	74.96	80.92
	r/m	47.38	48.68	49.31	49.41	49.12	48.51
0.6	k	2	3	4	5	6	7
	D_k/m	8.47	11.62	14.54	17.3	19.94	22.49
	r/m	10.59	14.53	18.17	21.57	24.75	27.7
	k	8	9	10	11	12	13
	D_k/m	24.95	27.35	29.69	31.98	34.22	36.42
	r/m	30.41	32.89	35.13	37.14	38.95	40.55

基于随机桥过程的窄带信道多径衰落仿真研究

Research on Simulation of Multi-Path Fading of Narrow-Band Channel Based on Stochastic Bridge

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