Results 61 to 70 of about 10,576 (166)
Guangtongxin yanjiu, 2015 在CoMP（协作多点发送/接收）联合传输资源分配中,研究发现在单天线功率约束条件下,传统的迫零波束赋形预编码技术会降低平均天线发射功率利用率。为了进一步提升系统吞吐量,文章提出一种预编码与功率联合分配算法,该算法采用一种预编码迭代计算方式,提高了天线发射功率利用率。仿真结果表明,所提算法与传统的预编码相比性能有较大提高。
古达文, 周冰
doaj
Policy &Internet, Volume 16, Issue 3, Page 628-642, September 2024.Abstract Infrastructure siting has been shown to lead to high contestation across political systems. To counteract this, policymaking has introduced participatory instruments that were recently supplemented by web‐based tools. Drawing on theoretical perspectives on policy conflict, this paper investigates how different conflict intensities reflected in
Ilana Schröder, Nils C. Bandelow
wiley +1 more source
World Medical &Health Policy, Volume 16, Issue 2, Page 116-133, June 2024.Abstract Although tobacco control efforts have been successful at reducing the rate of tobacco use in the general population, rates of use among low‐income populations persist. As a leader in tobacco control efforts, the U.S. state of California recently issued regulations regarding comprehensive tobacco cessation service requirements for state ...
Sara W. Yoeun +2 more
wiley +1 more source
Guangtongxin yanjiu, 2015 中继系统下的众多资源分配策略很少同时考虑多用户情形下的子载波配对和不同用户需求。针对这一问题,提出了一种基于QoS（服务质量）保证和比例公平的多用户子载波配对和功率分配算法,该算法既能保证QoS用户的最小速率要求,又能满足BE（尽力而为）用户之间速率比例公平的准则。该算法首先根据不同用户需求分配第二跳的子载波,然后利用匈牙利配对算法得到两跳子载波的最佳配对,最后用类似注水算法进行功率分配。仿真结果表明,所提算法在满足用户QoS保证和比例公平准则的同时有效提升了系统的吞吐量。
刘冰华, 李校林, 徐旭东
doaj
Distributed energy efficient beamforming algorithm for multicell multiuser downlink system [PDF]
, 2015 A distributed energy efficient beamforming algorithm was studied for multicell multiuser downlink communication system.Firstly,the energy efficient optimization problem was first considered as the maximization of the ratio between the system sum rate and
Lv-xi YANG +3 more
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Smooth Video Stream Transmission Algorithm for Multi-Basis Wireless Non-Orthogonal Multiple Access [PDF]
The rapid growth in demand for video services poses a significant challenge for smooth video playback. From a user-experience perspective, the jamming time during video playback may be one of the most critical indicators.
ZHU Zhiqiang, XU Chaonong, ZHU Donghui
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Dianci bileiqi, 2023 随着大量分布式光伏接入配电网，电力系统负荷侧的动态特性产生显著变化，尤其是配电网发生故障时，光伏的有功和无功响应对配网产生较大影响，因此，需要对分布式光伏接入对配网系统的暂态特性进行建模分析。基于光伏并网系统传统结构及控制方式，提出分别适用于低电压和高电压故障下，有功与无功解耦的逆变器保护控制策略，并对模型的高低电压穿越能力进行仿真，并基于逆变器实际电压穿越检测报告进行检验，验证了该光伏并网系统模型具备规定的故障穿越能力。由北京地区某光伏电站实际配网结构、设备参数和光伏控制参数 ...
陈茜 +7 more
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面向配电网弹性提升的多端口E-SOP 分布鲁棒优化配置 [PDF]
全球能源互联网为提升高比例新能源渗透的配电网在小概率-高损失极端事件下的弹性，提出了一种基于分布鲁棒优化的多端口智能储能软开关（E-SOP）配置模型。首先，构建含多端口E-SOP的配电网运行模型；进而，采用KL散度构建新能源机组出力模糊集，并以投资成本与配电网失负荷成本之和最小为目标，建立E-SOP双层三阶段分布鲁棒规划模型；采用列与约束生成算法实现分布鲁棒模型的拆分求解。最后，在IEEE 33节点算例中对模型和算法进行了验证，结果表明E-SOP可有效提升储能对不同馈线的功率支撑能力，从而增强配电网弹性。
李志勇, 黄缙华, 赵伟, 曾瑞江
doaj +1 more source
Outage probability based power allocation and relay selection algorithm in cooperative communication [PDF]
, 2013 The relay selection and power optimization of multi-relay cooperative communication network under a joint sum power constraint was considered.A low complexity lay selection and power allocation algorithm was also pro-posed in amplify-and-forward ...
Li-yue SUN, Ming GUO, Xiao-hui ZHAO
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Resource allocation in NOMA heterogeneous network based on MEC [PDF]
, 2020 Aiming at maximizing the cache revenue,a joint user association and power allocation algorithm was proposed for the matching of base stations with users and power allocation in a NOMA heterogeneous network with caches,a NOMA joint optimization algorithm ...
Haijun ZHANG, Keping LONG, Zizheng ZHANG
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