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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Terrain-based simulation of IEEE 802.11a and b physical layers on the martian surface
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Terrain-based simulation of IEEE 802.11a and b physical layers on the martian surface

机译：火星表面上基于IEEE 802.11a和b物理层的基于地形的仿真

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摘要

This paper presents results concerning the use of IEEE 802.11 a and b wireless local area network (WLAN) standards for proximity wireless networks on the Martian surface. The RF environment on the Martian surface is modeled using high-resolution digital elevation maps (DEMs) of Gusev Crater and Meridiani Planum (Hematite) as sample sites. The resulting propagation path loss models are then used in a physical layer (PHY) simulation. Our results show that Martian terrain as represented by the sites studied, can create multipath conditions which in turn affect 802.11 a and b PHY performance. However, with a few tens of milliwatts of radiated power and antenna heights within 1-2 m, orthogonal frequency division multiplexing (OFDM)-based 802.11 a can have very good PHY performance in terms of bit error rate (BER) and packet error rate (PER) for distances up to a few hundred meters; 802.11 b, which is based on direct-sequence spread spectrum (DSSS), is found to be much more adversely affected in the multipath environment. The DEM-based simulation methodology presented here may be more useful to mission planners than generic statistical models.
机译：本文介绍了有关火星表面上的邻近无线网络使用IEEE 802.11 a和b无线局域网（WLAN）标准的结果。使用Gusev Crater和Meridiani Planum（赤铁矿）的高分辨率数字高程图（DEM）作为样本站点，对火星表面的RF环境进行了建模。然后，将得到的传播路径损耗模型用于物理层（PHY）仿真。我们的结果表明，所研究站点代表的火星地形会造成多径条件，进而影响802.11 a和b PHY性能。但是，在几十毫瓦的辐射功率和1-2 m以内的天线高度的情况下，基于正交频分复用（OFDM）的802.11a在比特错误率（BER）和分组错误率方面可以具有非常好的PHY性能。 （PER）距离可达几百米；发现基于直接序列扩频（DSSS）的802.11 b在多径环境中受到的不利影响更大。与通用统计模型相比，此处介绍的基于DEM的模拟方法对任务计划者可能更有用。

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