本文選題：低軌衛(wèi)星 + 星地Wi-Fi通信　； 參考：《電訊技術(shù)》2017年08期

【摘要】：低軌(LEO)衛(wèi)星到地面之間的無線保真(Wi-Fi)通信系統(tǒng)當前已經(jīng)獲得了廣泛關(guān)注。針對LEO衛(wèi)星信道的高誤碼、長時延等特點,采用導頻插入、選擇重傳、幀聚合等方法對IEEE802.11g進行改進,并在開放式無線接入研究平臺(WARP)v3上完成了改進方案的設(shè)計。對改進后方案的多普勒頻偏性能、遠距離傳輸速率以及高速移動條件下的傳輸速率等系統(tǒng)性能進行測試的結(jié)果表明,改進后方案在復雜信道環(huán)境下可以獲得比商業(yè)Wi-Fi更好的系統(tǒng)性能。通過模擬驗證改進方案的系統(tǒng)性能,證明了基于LEO衛(wèi)星的Wi-Fi衛(wèi)星通信系統(tǒng)的可實現(xiàn)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.
【作者單位】： 中國空間技術(shù)研究院西安分院;
【分類號】：TN92;TN927.2

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本文編號：1861999