發(fā)布時(shí)間：2019-03-16 17:44

【摘要】：為了滿足用戶日益增長(zhǎng)的數(shù)據(jù)流量需求,無(wú)線網(wǎng)絡(luò)基站架構(gòu)正從嚴(yán)格規(guī)劃的宏基站轉(zhuǎn)變?yōu)槎鄠�(gè)分布式基站.分布式基站的部署位置具有很強(qiáng)的隨機(jī)性,不同于傳統(tǒng)的基于規(guī)則的基站部署模型,在泊松域上可隨機(jī)部署基站,為此,研究了多輸入多輸出干擾網(wǎng)絡(luò)中基于有限反饋的干擾對(duì)齊系統(tǒng)性能.首先將基站在泊松域上建模成齊次泊松過(guò)程,分析了量化后的信道狀態(tài)信息的相關(guān)統(tǒng)計(jì)特征,推導(dǎo)了系統(tǒng)的中斷概率和網(wǎng)絡(luò)容量的近似閉合表達(dá)式,通過(guò)最大化網(wǎng)絡(luò)容量的下界得到了最優(yōu)的發(fā)射機(jī)部署密度參數(shù).仿真結(jié)果驗(yàn)證了所推導(dǎo)的表達(dá)式能準(zhǔn)確地評(píng)估基于有限反饋的干擾對(duì)齊系統(tǒng)性能.
[Abstract]:In order to meet the increasing demand of data traffic, wireless network base station architecture is changing from strictly planned macro base station to multiple distributed base stations. The location of distributed base station deployment has strong randomness, which is different from the traditional rule-based base station deployment model. It can deploy base station randomly in Poisson domain, so it is different from the traditional rule-based base station deployment model. The performance of interference alignment system based on finite feedback in multi-input multi-output interference networks is studied. Firstly, the base station is modeled as homogeneous Poisson process in Poisson domain. The statistical characteristics of the quantized channel state information are analyzed, and the approximate closed expressions of the system interrupt probability and network capacity are derived. The optimal transmitter deployment density parameters are obtained by maximizing the lower bound of network capacity. The simulation results show that the derived expression can accurately evaluate the performance of the interference alignment system based on finite feedback.
【作者單位】： 北京郵電大學(xué)信息與通信工程學(xué)院;安慶師范學(xué)院計(jì)算機(jī)與信息學(xué)院;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)項(xiàng)目(2014AA01A701) 安徽省教育廳基金項(xiàng)目(KJ2013B117)
【分類(lèi)號(hào)】：TN929.5
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本文編號(hào)：2441829