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Hoc

Hoc的相关文献在1992年到2022年内共计894篇,主要集中在无线电电子学、电信技术、自动化技术、计算机技术、肿瘤学 等领域,其中期刊论文202篇、专利文献692篇;相关期刊111种,包括中国新通信、中国通信、计算机工程与应用等; Hoc的相关文献由1685位作者贡献,包括杨新宇、赵鹏、雷磊等。

Hoc—发文量

期刊论文>

论文:202 占比:22.60%

专利文献>

论文:692 占比:77.40%

总计:894篇

Hoc—发文趋势图

Hoc

-研究学者

  • 杨新宇
  • 赵鹏
  • 雷磊
  • 李腊元
  • 刘勃
  • 张连芳
  • 归琳
  • 向继东
  • 廖志
  • 窦志斌
  • 期刊论文
  • 专利文献

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    • 林锋
    • 摘要: Imagine this scene.There are a dozen people covered from head to toe in thick padding (衬垫).They are holding sticks in their hands and skating around on ice.Two of them are defending (守卫) their nets,but the rest are chasing(追逐)a speedy black dot(点).It is an ice hockey match!
    • 张振顶1; 刘宏展2; 杨波1; 李忠2; 顾蕾2
    • 摘要: 利用A d H oc网络对电站锅炉能效测试数据无线采集技术进行研究,通过A d H oc无线模块实现实时传输,利用在线采集软件对数据进行可视化显示、采集,为提高电站锅炉能效工作的效率提供了必要的支撑。
    • 方胜吉1
    • 摘要: 人们通常希望移动设备在接入网络中的工作时间越长越好。但是,一方面,由于Ad Hoc网络中的移动节点只能使用容量有限的电池供电,大幅度提高电池的单位容量从技术方面来说比较困难;另一方面,随着网络终端性能的提升、功能的加强,设备硬件自身产生的能耗会越来越大,对能量的需求也越来越高。因此,采取各种节能机制就成为了延长移动设备在Ad Hoc网络中工作时间的一个主要手段,也是本文研究的主要内容。
    • 朱全继; 慕福奇; 冷永清
    • 摘要: 提出了一种基于TDMA的多信道MAC协议,采用动态变更子帧长度、控制信道与数据信道时域重合方式,尽可能提高时隙资源利用率,采用协商机制,有效降低分组冲突,保证网络吞吐量、时延等性能指标.在OPNET仿真平台中建模,该协议在网络负载较高时,仍然可以保证分组传输成功率和较低的时延,为Ad hoc网络的设计提供参考.
    • 冷令; 吴伟斌
    • 摘要: 由于海上通信网络逐渐变得复杂,传统的VHF网络结构已经无法满足日益增长的海上船舶的通信要求。急需研究新型技术来代替VHF网络结构。而Ad Hoc网络具有很多先进的优点,比如可以独立组网、自组织且无中心等。通过优化融入海上通信的特性之后,能够有效应对船舶海上交通的大多情况,确保船舶的正常航行与安全。本文将在介绍Ad Hoc网络的特点和路由协议的基础上,着重介绍无线Ad Hoc网络的路由协议在船舶海上通信中的应用。
    • 郑莹
    • 摘要: 现在的舰船通信导航系统,能够提供非常完善的导航信息,这些导航信息一般都需要通过终端显示模块进行交互式共享。但是船舶的通信导航系统的网络结构是非常复杂的,尤其是在有限的空间中进行大量的数据处理和传输时,需要非常高效的通信网络作为支撑。本文主要研究了AD Hoc组网系统在船舶导航与通信系统中的应用。利用其易于组网的特点,对导航信息进行精确的处理,以满足航行的要求。文章重点讲述了该网络的主要组成原理,并采用了一种优化算法,主动降低了网络节点之间的传输延时,使得该系统能够满足船舶导航数据的显示要求。
    • Vinay B. Ramakrishnaiah; Robert F. Kubichek; Suresh S. Muknahallipatna
    • 摘要: Directional antennas shape transmission patterns to provide greater coverage distance and reduced coverage angle. Use of adaptive directional antenna arrays can minimize interference while also being more energy efficient. When used in an ad-hoc network, this reduces interference among transmitting nodes and thereby increases throughput. Such “smart antennas” use digital beamforming based on signal processing algorithms to compute the appropriate weights to form effective antenna patterns. Smart antennas require the knowledge of the signal received at each antenna in the antenna array, thereby increasing the complexity of hardware and cost. Also, conventional smart antennas optimize results for each individual node, while it is preferable to have a global optimal solution. A problem that has not been addressed is how to compute individual beam patterns that maximize some measure of global network performance. Historically, the focus has been on finding node antenna patterns that give locally optimal performance. In this paper, we investigate a low hardware complexity beamforming approach aimed at improving global performance that uses average Noise-to-Signal ratio as the performance measure. Given a multi-hop route from source to destination, beam patterns are shaped to maximize average signal-to-noise ratio across all nodes on the route, which reduces bit-error rates and extends battery and network lifetime. The antenna weights are sequentially adjusted across all nodes in the route to achieve optimization across the network. By using phase-only weights, hardware costs are minimized. The performance of the algorithm using different path loss models is explored.
    • Mohammed Tarique
    • 摘要: Ad hoc networks have drawn considerable attentions of researchers for the last few years. Various applications of ad hoc networks have been reported in the literatures including disaster management, battle field, environmental management, healthcare, and smart grid. Ad hoc networks have some limitations namely short operating life, unreliability, scalability, delay, high interference, and scarce resources. In order to overcome these limitations, numerous researches have been carried out. Smart antenna integration is one of them. It has been shown in the literatures that smart antenna can improve network’s capacity, increase network lifetime, reduce delay, and improve scalability by directing antenna radiation pattern in a desired direction. But, producing a desired antenna radiation pattern is not a simple task for resource constraint ad hoc networks. A careful selection of beam forming algorithm is required. In this paper we show that smart antenna system, consisting of circular microstrip antennas and arranged in a linear arrangement, is the most suitable choice for ad hoc network. We compare a number of smart antenna algorithms in this paper under different noisy conditions. We show that the Least Square Constant Modulus (LSCM) and Least Constant Modulus (LCM) algorithms outperform other algorithms in terms of directivity and minimized side lobes.
    • 孙智博
    • 摘要: Ad hoc网络是一组具有无线收发功能的移动节点组成。它可以不依赖基础网络设施,随时随地快速组网,因此吸引了大量研究人员关注。Ad hoc网络是一种无线通信网络,和现有其他网络在网络结构,协议方面有很多区别。分析Ad hoc网络与相关的网络协议可以有助于我们更好地应用Ad hoc网络技术。
    • 陈圳
    • 摘要: 一个孤立的Ad hoc网络中的所有节点都是在同一个Ad hoc网络中进行通信。孤立Ad hoc网络可以分为两种类型:大规模孤立Ad hoc网络和小规模孤立Ad hoc网络。通过理论分析和模拟,分析出大规模的Ad hoc网络具有较差的流量性能,表明这种网络不具有大的商业潜力。
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