本文選題：大規(guī)模MIMO系統(tǒng) + 多用戶MIMO系統(tǒng)��； 參考：《電訊技術》2014年09期

【摘要】：為了提高大規(guī)模多用戶多輸入多輸出(MU-MIMO)下行系統(tǒng)的能效,提出了一種基于發(fā)送天線選擇技術的能效優(yōu)化機制。首先建立了同時考慮發(fā)送功率與電路功耗的新的系統(tǒng)功耗模型,并基于該模型,分析了基站配置天線數(shù)目與所有接收終端用戶數(shù)目對系統(tǒng)總功耗及能效的影響。然后通過理論推導得到了系統(tǒng)能效最優(yōu)時的最優(yōu)天線選擇數(shù)目,并與使用全部天線時的系統(tǒng)能效進行比較。仿真結果表明,所提出的發(fā)送天線選擇機制通過優(yōu)化激活部分基站天線能夠明顯提高系統(tǒng)能效。在用戶數(shù)為10、發(fā)送功率分別為40 W和10 W時,與使用全部天線相比,天線選擇技術能夠分別使得系統(tǒng)能效獲得大約12%和78%的性能增益。
[Abstract]:In order to improve the energy efficiency of large scale multi-user MU-MIMO-MU-MIMO-based downlink system, an energy efficiency optimization mechanism based on transmit antenna selection technology is proposed. A new system power model considering both transmission power and circuit power is proposed. Based on this model, the effects of the number of base station antennas and the number of receiving terminal users on the total power consumption and energy efficiency of the system are analyzed. Then, the optimal number of antennas for optimal system energy efficiency is obtained by theoretical derivation, and compared with the system energy efficiency when all antennas are used. Simulation results show that the proposed antenna selection mechanism can significantly improve system energy efficiency by optimizing the activation of some base station antennas. When the number of users is 10 and the transmission power is 40W and 10W, compared with all antennas, the antenna selection technique can achieve about 12% and 78% performance gains for system energy efficiency, respectively.
【作者單位】： 鄭州大學信息工程學院;
【基金】：國家自然科學基金資助項目(61271421);國家自然科學基金青年科學基金資助項目(61301150) 高等學校博士點專項科研基金(新教師類)(20134101120001)~~
【分類號】：TN919.3

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本文編號：1914754