无线网络衰落和损耗的建模与仿真研究

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (12): 2813-2819.

无线网络衰落和损耗的建模与仿真研究

任智1，李晴阳1，陈前斌1，Li Hongbin2

1. 重庆邮电大学通信与信息工程学院，重庆 400065; 2. 史蒂文斯理工学院电气与计算机工程系, 美国新泽西 07030

出版日期:2009-12-24 发布日期:2010-01-03

Modeling and simulation of fading and loss for wireless networks

REN Zhi1, LI Qing-yang1,CHEN Qian-bin1, LI Hong-bin2

1. School of Communication and Information Engineering, Chongqing Univ. of Posts and Communications, Chongqing 400065, China; 2. Dept. of Electrical and Computer Engineering, Stevens Inst. of Technology, NJ 07030, USA

Online:2009-12-24 Published:2010-01-03

摘要/Abstract

摘要：

为了考察多径衰落、路径损耗和阴影衰落效应对无线网络性能的影响并对其进行准确模拟，建立了多径衰落和阴影衰落的数学和仿真模型，设计了阴影衰落效应的计算方法，优化了路径损耗指数的使用。并以OPNET软件为仿真平台进行了建模和仿真实验，仿真结果从数值上表现了多径衰落、路径损耗等效应对采用IEEE 802.11a/b/g系列标准的无线网络的吞吐率和时延等性能的具体影响，增强了无线网络仿真的准确性和合理性。同时，新模型的加入也提升了仿真平台的功能。

Abstract:

To explore and simulate the impact of multipath fading, pathloss, and shadowing fading on wireless networks, mathematical and simulation models for fading and shadowing are proposed, a method to calculate the shadowing effect is designed, and the utilization of the pathloss exponent is optimized. Moreover, modeling and simulation are done with OPNET. Simulation results quantitatively show the impact of fading, pathloss, and shadowing on the performance of IEEE 802.11a/b/g wireless networks. Thus, simulation of wireless networks becomes more accurate and reasonable. Simultaneously, the used simulation platform is also improved by integrating new models.

任智1，李晴阳1，陈前斌1，Li Hongbin2. 无线网络衰落和损耗的建模与仿真研究[J]. Journal of Systems Engineering and Electronics, 2009, 31(12): 2813-2819.

REN Zhi1, LI Qing-yang1,CHEN Qian-bin1, LI Hong-bin2. Modeling and simulation of fading and loss for wireless networks[J]. Journal of Systems Engineering and Electronics, 2009, 31(12): 2813-2819.