LEO星地Wi-Fi方案设计与验证

发布时间：2018-05-08 15:45

本文选题：低轨卫星 + 星地Wi-Fi通信　；参考：《电讯技术》2017年08期

【摘要】：低轨(LEO)卫星到地面之间的无线保真(Wi-Fi)通信系统当前已经获得了广泛关注。针对LEO卫星信道的高误码、长时延等特点,采用导频插入、选择重传、帧聚合等方法对IEEE802.11g进行改进,并在开放式无线接入研究平台(WARP)v3上完成了改进方案的设计。对改进后方案的多普勒频偏性能、远距离传输速率以及高速移动条件下的传输速率等系统性能进行测试的结果表明,改进后方案在复杂信道环境下可以获得比商业Wi-Fi更好的系统性能。通过模拟验证改进方案的系统性能,证明了基于LEO卫星的Wi-Fi卫星通信系统的可实现性。
[Abstract]:Low-orbit Leo) wireless fidelity-to-ground communication systems have received widespread attention. Aiming at the characteristics of LEO satellite channel, such as high error code and long delay, the IEEE802.11g is improved by pilot insertion, selective retransmission and frame aggregation, and the improved scheme is designed on the open wireless access research platform, WARP V3. The performance of the improved scheme, such as Doppler frequency offset, long-distance transmission rate and transmission rate at high speed, is tested. The improved scheme can achieve better system performance than commercial Wi-Fi in complex channel environment. The system performance of the improved scheme is verified by simulation, and the realizability of Wi-Fi satellite communication system based on LEO satellite is proved.
【作者单位】：中国空间技术研究院西安分院;
【分类号】：TN92;TN927.2

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