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Interference Cancellation in Device-to-Device Communications underlying MU-MIMO Cellular Networks

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China Communications 2019年第4期16卷 75-88页

作者： yiyang ni Yuxi Wang Hongbo Zhu Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and Telecommunications Jiangsu Second Normal University

This paper investigates the device-to-device(D2 D) communication underlaying multi-user multi-input multi-output(MU-MIMO) cellular networks. It is assumed that D2 D users reuse the downlink time-frequency resources of cellular links, and the base station(BS) is assumed to be equipped with multiple antennas. We investigate the ergodic achievable sum rate of the system when the interference cancellation(IC) precoding strategy is employed at the BS. The distributions of the received signal-to-interference-plus-noise ratio(SINR) for each link are firstly analyzed, and an exact ergodic achievable sum rate of the whole system with closedform expressions is then derived. Furthermore, we present novel upper and lower bounds with simpler expressions, which are later verified to be fairly close to the Monte-Carlo simulations. All the expressions we presented are suitable for arbitrary network topology and arbitrary number of antennas at BS. Based on the derived bounds, the influence of the antennas at BS on system performance is then analyzed. We reveal that the system performance increases along with the number of antennas at BS in a logarithmic way. The accuracy of our analytical results is validated via comparisons with Monte-Carlo simulations.

关键词： interference cancellation D2D communication ergodic achievable sum rate MU-MIMO

Beamforming and Interference Cancellation for D2D Communication Assisted by Two-Way Decode-and-Forward Relay Node

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China Communications 2018年第3期15卷 100-111页

作者： yiyang ni Jie Zhao Yuxi Wang Hongbo Zhu Jiangsu Second Normal University Nanjing 210013 China Key Laboratory of Wireless Communications of Jiangsu Province Nanjing 210003 China Nanjing University of Posts and Telecommunications Nanjing 210003 China

This paper investigates the device-to-device(D2D) communication underlaying cellular network assisted by a two-way decode-and-forward relay node. We assume the base station(BS) is equipped with M-antenna and serves its own cellular user while the D2D users communicate via a two-way decode-and-forward relay node. Both beamforming(BF) and interference cancellation(IC) strategies at the BS are considered to improve the performance for the cellular link and D2D link, respectively. We first analyze the received signal-to-interference-plus-noise for the cellular link under BF and IC strategies and then derive the exact closed-form expressions for the cellular link. Asymmetric and symmetric cases are discussed for various locations of each user. Finally, the approximations for high signal-to-noise regime are also presented. Numerical results demonstrate the accuracy of the analytical and asymptotic results.

关键词： beamforming interference cancel-lation device-to-device (D2D) outage proba-bility relay-assisted

Power Allocation for NOMA in D2D Relay Communications

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China Communications 2021年第1期18卷 61-69页

作者： Yan Cai Chunhua Ke yiyang ni Jun Zhang Hongbo Zhu Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and TelecommunicationsNanjing 210003China Jiangsu Second Normal University Nanjing 210013China

Non-orthogonal multiple access(NOMA)is considered as one of the key technologies for the fifth generation(5G)wireless *** integration of NOMA and device-to-device(D2D)communications has recently attracted wide *** this paper,a relaying D2D communications assisted with cooperative relaying systems using NOMA(DRC-NOMA)is *** analyze the ergodic sum-rate for the proposed system and then derive the closed-form *** addition,an optimal power allocation strategy maximizing the ergodic sum-rate is proposed based on these analysis *** results show the good agreement between the results of analysis and Monte Carlo *** proposed DRC-NOMA has a great improvement of the ergodic sum-rate in the small regime of average channel gain of D2D pair.

关键词： device-to-device communication nonorthogonal multiple access decode-and-forward relaying power allocation rate analysis

Energy Efficiency and Spectrum Efficiency in Underlay Device-to-Device Communications Enabled Cellular Networks

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China Communications 2019年第4期16卷 16-34页

作者： Yan Cai yiyang ni Jun Zhang Su Zhao Hongbo Zhu Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and Telecommunications Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Second Normal University National Mobile Communications Research Laboratory Southeast University

In this paper, we investigate the energy efficiency and spectrum efficiency, including one-hop device-to-device(D2D) communications mode and two-way amplify-and-forward(AF) relaying D2D communications mode in underlay D2D communications enabled cellular networks. An analysis of average energy efficiency and spectrum efficiency are developed and closed-form expressions are obtained for two types of D2D communications modes under the effect of Rayleigh fading channel, path loss, and co-channel interference. Analytical results are validated through numerical simulations. Based on the simulation, the effects of the interference, the distance between D2D pair and the position of relay node on the energy efficiency and spectrum efficiency of D2D communications are investigated. The optimal D2D transmission powers of these two modes to maximize the energy efficiency are also investigated.

关键词： D2D communications energyefficiency spectrum efficiency two-way amplify-and-forward relaying protocol

Performance Analysis for Large Intelligent Surface Assisted Vehicular Networks

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China Communications 2021年第3期18卷 1-17页

作者： yiyang ni Yaxuan Liu Jin Zhou Qin Wang Haitao Zhao Hongbo Zhu Jiangsu Second Normal University Nanjing 210013China Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and TelecommunicationsNanjing 210003China

Large intelligent surface(LIS)is considered as a new solution to enhance the performance of wireless networks[1].LIS comprises low-cost passive elements which can be well *** this paper,a LIS is invoked in the vehicular *** analyze the system performance under Weibull *** derive a novel exact analytical expression for outage probability in closed *** on the analytical result,we discuss three special scenarios including high SNR case,low SNR case,as well as weak interference *** corresponding approximations for three cases are provided,*** order to gain more insights,we obtain the diversity order of outage probability and it is proved that the outage probability at high SNR depends on the interference,threshold and fading parameters which leads to 0 diversity ***,we investigate the ergodic achievable rate of LIS-assisted vehicular networks and present the closed-form tight *** to the outage performance,three special cases are studied and the asymptotic expressions are provided in simple forms.A rate ceiling is shown for high SNRs due to the existence of interference which results 0 high SNR ***,we give the energy efficiency of LIS-assisted vehicular *** results are presented to verify the accuracy of our *** is evident that the performance of LIS-assisted vehicular networks with optimal phase shift scheme exceeds that of traditional vehicular networks and random phase Received:Aug.6,2020 Revised:Nov.17,2020 Editor:Caijun Zhong shift scheme significantly.

关键词： large intelligent surface outage probability ergodic achievable rate vehicular network Weibull fading

RIS辅助MIMO NOMA系统中利用统计CSI的下行传输方法

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电子与信息学报 2024年第4期46卷 1257-1265页

作者：陆佳程王斌张军倪艺洋南京邮电大学通信与信息工程学院南京210003 江苏第二师范学院物理与信息工程学院南京210013

针对可重构智能反射表面(RIS)辅助多输入多输出(MIMO)非正交多址接入(NOMA)下行传输系统,该文提出利用统计信道状态信息(CSI)的基站发送协方差矩阵与RIS相移矩阵设计方法。首先,在莱斯空间相关信道假设下,利用大维随机矩阵理论,推导了RI... 详细信息

针对可重构智能反射表面(RIS)辅助多输入多输出(MIMO)非正交多址接入(NOMA)下行传输系统,该文提出利用统计信道状态信息(CSI)的基站发送协方差矩阵与RIS相移矩阵设计方法。首先,在莱斯空间相关信道假设下,利用大维随机矩阵理论,推导了RIS辅助MIMO NOMA系统遍历和速率的确定性表达式;然后,在弱用户速率约束与发送功率受限的条件下,通过最大化确定性大系统近似和速率,利用统计CSI,分别设计了强、弱用户的次优发送协方差矩阵和RIS的相移矩阵。仿真结果表明,所推导的近似表达式具有很好的近似效果,所设计的发送协方差矩阵和相移矩阵能显著提升系统的和速率。

关键词：统计信道状态信息非正交多址接入可重构智能反射表面发送协方差大维随机矩阵理论

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基于激光扫描的无线传感网络数据拟合系统

激光杂志 2018年第12期39卷 66-69页

作者：刘潇倪艺洋江苏第二师范学院数学与信息技术学院

在对无线传感网络数据的分析和研究中,数据拟合精度会对最终的研究结果产生重要影响,为此提出基于激光扫描的传感网络数据拟合系统设计。分析了数据拟合系统的空间几何坐标关系及激光扫描原理,并以此为依托设计了扫描系统的结构组成;激... 详细信息

在对无线传感网络数据的分析和研究中,数据拟合精度会对最终的研究结果产生重要影响,为此提出基于激光扫描的传感网络数据拟合系统设计。分析了数据拟合系统的空间几何坐标关系及激光扫描原理,并以此为依托设计了扫描系统的结构组成;激光扫描数据采集模块提高了无线传感。网络数据的采集效率和配准精度,利用Matlab软件对配准后的无线传感网络数据向量进行拟合,在求解出无线传感网络数据多元函数极值的同时,也有效控制了系统的拟合误差。从观测样本的残差分布结果能够分析出,无线传感网络数据的拟合精度得到显著提高,训练样本的RMS值降低了7.4%。

关键词：激光扫描传感网络拟合精度残差分布

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电脉冲除冰系统非线性等效电路分析

北京航空航天大学学报 2015年第8期41卷 1539-1545页

作者：陈鹏葛红娟倪一洋徐媛媛南京航空航天大学自动化学院南京210016

为了更有效地进行电脉冲除冰系统(EIDI)的电路参数设计,利用能量守恒原理研究了电脉冲除冰中系统振动能量的非线性等效负载,并推导了与系统参数相关的非线性等效电路模型.在ANSOFT Maxwell电磁场有限元环境中建立了轴对称圆柱型脉冲线... 详细信息

为了更有效地进行电脉冲除冰系统(EIDI)的电路参数设计,利用能量守恒原理研究了电脉冲除冰中系统振动能量的非线性等效负载,并推导了与系统参数相关的非线性等效电路模型.在ANSOFT Maxwell电磁场有限元环境中建立了轴对称圆柱型脉冲线圈的三维瞬态电磁场仿真模型,采用数值拟合的方法得到在除冰激励周期内法向电磁力的表达式;在此基础上研究了铝板蒙皮在该脉冲力作用下的形变表达式和电磁力做功情况.最终利用非线性等效电路模型设计了不同气隙间距下的储能元件电路参数,且通过实验验证了本文方法的正确性,为电脉冲除冰系统的设计提供了理论依据.

关键词：电脉冲除冰(EIDI)系统能量守恒原理脉冲电磁力非线性等效电路气隙间距

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面向5G的毫米波D2D通信技术综述

现代电子技术 2019年第21期42卷 6-12页

作者：倪艺洋王玉玺朱洪波江苏第二师范学院数学与信息技术学院江苏南京210003 南京邮电大学江苏省无线通信重点实验室江苏南京210003

第五代移动通信系统(5G)是面向2020年以后需求的新一代移动通信系统,将满足未来大规模机器通信、超可靠和低延迟通信等应用场景的需求。为了满足5G移动通信中网络业务不均匀性和热点地区业务高速数据分发的需求,需要大力发展新的系统架... 详细信息

第五代移动通信系统(5G)是面向2020年以后需求的新一代移动通信系统,将满足未来大规模机器通信、超可靠和低延迟通信等应用场景的需求。为了满足5G移动通信中网络业务不均匀性和热点地区业务高速数据分发的需求,需要大力发展新的系统架构以及无线传输理论。结合国内外移动通信发展的最新趋势,讨论了D2D通信、毫米波无线传输以及毫米波D2D通信的发展历程、技术特点、应用场景以及关键技术,并对毫米波D2D通信的未来研究热点进行展望。

关键词： 5G D2D通信通信系统移动通信低延迟通信毫米波无线传输