基于带内回程的全双工大规模MIMO异构网覆盖分析
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摘要
在大规模多输入多输出(MIMO)系统中,带内全双工无线回程方案能够有效复用无线电接入频谱,大幅提高网络性能。为此,基于该方案构建大规模MIMO异构蜂窝网络模型,并假设网络元素分别服从独立齐次泊松点过程,利用随机几何理论分别研究宏蜂窝下行和小蜂窝上行链路信号干扰噪声比(SINR)的覆盖概率,分析不同参数对覆盖性能的影响。仿真结果表明,带内全双工无线回程方案能够有效提高系统频谱效率,但不能改善宏蜂窝和小蜂窝网络的SINR覆盖概率。
In massive Multiple-Input Multiple-Output( MIMO) system,In-Band( IB) Full-Duplex( FD) wireless backhaul scheme can reuse the radio access spectrum and greatly improve the network performance. With this consideration,this paper proposes a massive MIMO heterogeneous cellular network model based on IB FD wireless backhaul. By assuming that the network elements are subject to independent Homogeneous Possion Point Process( HPPP)and using the stochastic geometry theory,it researches the Signal-to-Interference-Noise Ratio( SINR) coverage probabilities of the macro cell downlink and small cell uplink transmission respectively,and analyzes the impacts of different parameters on the coverage performance. Simulation results showthat the IB FD wireless backhaul scheme can effectively improve the spectral efficiency of the system,but it cannot improve the SINR coverage probability of the macro cell and small cell networks.
In massive Multiple-Input Multiple-Output( MIMO) system,In-Band( IB) Full-Duplex( FD) wireless backhaul scheme can reuse the radio access spectrum and greatly improve the network performance. With this consideration,this paper proposes a massive MIMO heterogeneous cellular network model based on IB FD wireless backhaul. By assuming that the network elements are subject to independent Homogeneous Possion Point Process( HPPP)and using the stochastic geometry theory,it researches the Signal-to-Interference-Noise Ratio( SINR) coverage probabilities of the macro cell downlink and small cell uplink transmission respectively,and analyzes the impacts of different parameters on the coverage performance. Simulation results showthat the IB FD wireless backhaul scheme can effectively improve the spectral efficiency of the system,but it cannot improve the SINR coverage probability of the macro cell and small cell networks.
引文
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[2]Cisco.Cisco Visual Networking Index:Global Mobile Data Traffic Forecast Update,2014-2019[Z].2015.
[3]尤肖虎,潘志文,高西奇,等.5G移动通信发展趋势与若干关键技术[J].中国科学:信息科学,2014,18(5):551-563.
[4]Marzetta T L.Noncooperative Cellular Wireless with Unlimited Numbers of Base Station Antennas[J].IEEE Transactions on Wireless Communications,2010,9(11):3590-3600.
[5]邓鹏飞,王丹,贾向东.全双工大规模MIMO AF中继系统频谱与能量效率研究[J].计算机工程,2016,42(5):139-145.
[6]Ngo H Q,Suraweera H A,Matthaiou M,et al.Multipair Full-duplex Relaying with Massive Arrays and Linear Processing[J].IEEE Journal on Selected Areas in Communications,2014,32(9):1721-1737.
[7]Jaber M,Imran MA,Tafazolli R,et al.5G Backhaul Challenges and Emerging Research Directions:A Survey[J].IEEE Access,2016,4:1743-1766.
[8]Ge Xiaohu,Cheng Hui,Guizani M,et al.5G Wireless Backhaul Networks:Challenges and Research Advances[J].IEEE Network,2014,28(6):6-11.
[9]Tabassum H,Sakr A H,Hossain E.Massive MIMO-enabled Wireless Backhauls for Full-duplex Small Cells[C]//Proceedings of 2015 IEEE Global Communications Conference.Washington D.C.,USA:IEEE Press,2015:1-6.
[10]Li Boyu,Zhu Dengkui,Liang Ping.Small Cell In-band Wireless Backhaul in Massive MIMO Systems:A Cooperation of Next-generation Techniques[J].IEEE Transactions on Wireless Communications,2015,14(12):7057-7069.
[11]Yang H H,Geraci G,Quek T Q S.Energy-efficient Design of MIMO Heterogeneous Networks with Wireless Backhaul[J].IEEE Transactions on Wireless Communications,2016,15(7):4914-4927.
[12]Chiu S N,Stoyan D,Kendall W S,et al.Stochastic Geometry and Its Applications[M].[S.l.]:John Wiley&Sons,2013.
[13]Wang L,Wong K K,Elkashlan M,et al.Secrecy and Energy Efficiency in Massive MIMO Aided Heterogeneous C-RAN:A NewLook at Interference[J].IEEE Journal of Selected Topics in Signal Processing,2016,10(8):1375-1389.
[14]He Anqi,Wang Lifeng,Elkashlan M,et al.Spectrum and Energy Efficiency in Massive MIMO Enabled Het Nets:A Stochastic Geometry Approach[J].IEEE Communications Letters,2015,19(12):2294-2297.
[15]Gradshteyn I S,Ryzhik I M.Table of Integrals,Series,and Products[M].[S.l.]:Academic Press,2007.