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(wú)線保真(Wi-Fi)通信系統(tǒng)當(dāng)前已經(jīng)獲得了廣泛關(guān)注。針對(duì)LEO衛(wèi)星信道的高誤碼、長(zhǎng)時(shí)延等特點(diǎn),采用導(dǎo)頻插入、選擇重傳、幀聚合等方法對(duì)IEEE802.11g進(jìn)行改進(jìn),并在開放式無(wú)線接入研究平臺(tái)(WARP)v3上完成了改進(jìn)方案的設(shè)計(jì)。對(duì)改進(jìn)后方案的多普勒頻偏性能、遠(yuǎn)距離傳輸速率以及高速移動(dòng)條件下的傳輸速率等系統(tǒng)性能進(jìn)行測(cè)試的結(jié)果表明,改進(jìn)后方案在復(fù)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(guò)模擬驗(yàn)證改進(jìn)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(shí)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(guó)空間技術(shù)研究院西安分院;
【分類號(hào)】：TN92;TN927.2

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本文編號(hào)：1861999