本文選題：深空通信 + Ka頻段��； 參考：《宇航學(xué)報(bào)》2016年02期

【摘要】：將呈現(xiàn)隨機(jī)"好"、"壞"狀態(tài)跳變的深空Ka頻段鏈路噪聲溫度建模為兩狀態(tài)Gilbert-Elliot信道,考慮深空下行發(fā)送端只能獲得延遲的信道狀態(tài)信息(CSI)的限制,結(jié)合部分觀測馬爾科夫決策理論設(shè)計(jì)了基于延遲CSI預(yù)測信道狀態(tài)的自適應(yīng)最大化吞吐量傳輸策略。理論推導(dǎo)了在深空通信環(huán)境下最優(yōu)傳輸策略的關(guān)鍵閾值,并給出了簡化的閉合解計(jì)算式。通過地球-火星通信參數(shù)仿真,校驗(yàn)了該方案能有效提高吞吐量,提高文件傳輸效率。
[Abstract]:The link noise temperature in deep space Ka band with random "good" and "bad" state jump is modeled as a two-state Gilbert-Elliot channel, considering the limitation that the downlink transmitter in deep space can only obtain delayed channel state information (CSI). Combined with partial observation Markov decision theory, adaptive maximum throughput transmission strategy based on delayed CSI prediction channel state is designed. The key threshold of optimal transmission strategy in deep space communication environment is derived theoretically, and a simplified closed solution formula is given. Through the simulation of earth-Mars communication parameters, it is verified that this scheme can effectively improve the throughput and file transfer efficiency.
【作者單位】： 哈爾濱工業(yè)大學(xué)深圳研究生院;肇慶學(xué)院電子信息與機(jī)電工程學(xué)院;
【基金】：國家自然科學(xué)基金(61201144;61371102);國家自然科學(xué)基金重大研究計(jì)劃(91338112) 國家高技術(shù)研究發(fā)展計(jì)劃(2014AA01A704)
【分類號】：V443.1
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本文編號：2065309