无线基站的经济效益分析及其在无线网络规划、优化中的应用

本文以GSM网络为例,简要介绍了运营商网络规划人员开展基站经济效益分析的方法,并通过示例介绍了其在无线网络规划和优化中的具体运用。本文讨论的方法对于运营商开展TD-LTE网络的规划和优化也有重要的参考意义。     

配网规划中主干配模式的应用分析

本文将对配网中主干配模式的不同特点进行分析,结合当前主干配模式在配网规划中的应用状况,探讨在配网规划中如何推进配网接线模式向主干配模式应用转变。     

NETCAP: a capacity planning tool for practical content distribution network designs

This paper describes a capacity planning tool NETCAP, which is a prototype software program for automatically planning and integrating application‐specific content‐distribution networks (CDNs). The CDN integration problem consists of two problems: data management system design problem and network topology design problem. The data management system design problem comprises of the server placement and file allocation problems, where the network topology design problem involves determining the network topology with network technology considerations. The CDN integration problem has been formulated as an optimization problem; where the objective function is to optimize a network topology that satisfies both the servers' access requirements and clients' communications. An evolutionary technique is used in NETCAP to search the design space. The experimental results for a CDN integration problem described here demonstrate the effectiveness of NETCAP in finding good CDN designs from a large design space in a few minutes. Copyright © 2006 John Wiley & Sons, Ltd.     

基于任务的分布式无线网络规划仿真设计

从流程设计、逻辑协议以及软件功能展示的角度介绍了基于任务的分布式网络规划仿真工具。基于任务的分布式无线网络规划仿真工具不仅继承了单机版仿真软件的仿真精确高以及操作方便等优点,同时提高了规划仿真的规模与效率,很大程度上解决了网络规划规模的不断增大与计算机处理能力有限之间的矛盾。     

Projection spectral analysis: A unified approach to PCA and ICA with incremental learning

Projection spectral analysis is investigated and refined in this paper, in order to unify principal component analysis and independent component analysis. Singular value decomposition and spectral theorems are applied to nonsymmetric correlation or covariance matrices with multiplicities or singularities, where projections and nilpotents are obtained. Therefore, the suggested approach not only utilizes a sum-product of orthogonal projection operators and real distinct eigenvalues for squared singular values, but also reduces the dimension of correlation or covariance if there are multiple zero eigenvalues. Moreover, incremental learning strategies of projection spectral analysis are also suggested to improve the performance.     

基于成本与网络负载最优的智能配电通信网络规划策略

针对配电网络单个通信终端节点数据量小、通信终端节点多的特点,在提高网络接入节点数量的基础上最大化网络的负载.在宏基站、微基站部署方式上,将宏基站与微基站同时部署,以提供给微基站更多的部署选择.在分析智能配电网络通信业务需求、现有网络规划的弊端的基础上,建立了多目标优化模型,并与单目标优化模型进行对比分析.最后,从规划方案图以及网络性能分析上证明了本文所提策略的优越性.     

面向多层次、多指标的光网络规划与评估方法

首先深入分析了影响业务可靠性的关键指标,并建立了面向可靠性和建设成本的网络规划模型,然后设计了自适应免疫算法以求解网络规划方案。进而,建立了面向多层次、多指标的网络规划方案评估模型,并使用神经网络算法获得指标权重,实现对网络规划方案的全面、有效评估。通过仿真可知,提出的面向多层次、多指标的光网络规划与评估方法能够提高光缆资源利用率和站点成环率、降低网络建设成本以及保障网络可靠性,有助于提高运维人员的工作效率和运维水平。     

面向复杂网络的异构网络表示学习综述

异构信息网络包含丰富的节点信息和链接信息,具有复杂异质性、高稀疏性、属性高维性等特性,这些特性给网络表示学习任务带来了巨大的挑战。异构网络表示学习通过在嵌入过程中将多样化的异质信息和结构信息进行有效融合,学习得到更有利于下游机器学习任务的低维特征向量。从异构网络表示学习方法的研究粒度出发,对近年的研究现状进行了比较全面的分析和讨论。首先探讨网络表示学习的产生动机,阐述了近年的异构网络表示学习的研究历程;然后对具有代表性的算法模型进行分类讨论,归纳其主要的研究内容和所使用的嵌入技巧。最后给出了未来工作中异构网络表示学习可能的研究方向和比较有价值的研究内容。     

Framework for TCAD augmented machine learning on multi-I-V characteristics using convolutional neural network and multiprocessing

In a world where data is increasingly important for making breakthroughs,microelectronics is a field where data is sparse and hard to acquire.Only a few entities have the infrastructure that is required to automate the fabrication and testing of semiconductor devices.This infrastructure is crucial for generating sufficient data for the use of new information technolo-gies.This situation generates a cleavage between most of the researchers and the industry.To address this issue,this paper will introduce a widely applicable approach for creating custom datasets using simulation tools and parallel computing.The multi-I-V curves that we obtained were processed simultaneously using convolutional neural networks,which gave us the abil-ity to predict a full set of device characteristics with a single inference.We prove the potential of this approach through two con-crete examples of useful deep learning models that were trained using the generated data.We believe that this work can act as a bridge between the state-of-the-art of data-driven methods and more classical semiconductor research,such as device en-gineering,yield engineering or process monitoring.Moreover,this research gives the opportunity to anybody to start experi-menting with deep neural networks and machine learning in the field of microelectronics,without the need for expensive experi-mentation infrastructure.     

An analog feed-forward neural network with on-chip learning

An analog continuous-time neural network with on-chip learning is presented. The 4-3-2 feed-forward network with a modified back-propagation learning scheme was build using micropower building blocks in a double poly, double metal 2 CMOS process. The weights are stored in non-volatile UV-light programmable analog floating gate memories. A differential signal representation is used to design simple building blocks which may be utilized to build very large neural networks. Measured results from on-chip learning are shown and an example of generalization is demonstrated. The use of micro-power building blocks allows very large networks to be implemented without significant power consumption.     

基于人工鱼群神经网络的景观生态规划方法

将改进人工鱼群- BP神经网络混合算法(RAAFSA - BP)应用于景观生态规划方法中,建立了景观生态规划的RAAFSA - BP模型,对城市景观进行规划和评价.结果表明,该算法泛化能力强,预测精度显著提高,为景观格局预测、模拟分析及景观规划提供了一种有效的方法.     

网络规划设计在校园网建设过程中的应用研究

网络规划明确了工程建设的目标,用户的需求和各种业务需求,因此,网络工程能否达到预期的效果,前期的网络规划工作很重要,本文以毕节职业技术学院新校区网络建设为例,对此进行阐述。     

基于Monte-Carlo仿真的4G网络感知规划方法

借鉴国内机构对用户感知研究成果,建立业务感知空口速率保障门限标准;对Monte-Carlo仿真技术进行研究,提炼得出感知仿真规划中用户分布模型及业务模型的设计方法,在此基础上给出具体的仿真规划分析思路.以某区域实际规划为案例,通过对比规划前后的业务感知速率及业务接通成功率发现,基于仿真进行感知规划的方法应用可行、效果良好,具有很好的推广价值.     

基于电子鼻的气体等级鉴别信号处理方法

本文介绍了电子鼻的概念及电子鼻信号处理的重要性。从理论研究与实验分析的角度探讨了独立分量分析、模糊神经网络等新方法在电子鼻信号处理中的作用。建立了对应的气体等级鉴别数学模型,并得到实验结果的验证。     

基于增量式深度神经网络的图像分类系统

为解决图像分类任务中模型结构固化、产生巨大内存消耗、时间消耗的问题,提出一种增量式深度神经网络（IDNN）。输入样本通过聚类算法激活不同簇并被分别处理：如果新样本激活已有簇,则更新该簇参数;否则为新簇开辟分支,并训练独立特征集。在Caltech-101、ORL Face、ETH-80数据库的验证结果表明,该系统能自动调整网络结构,适用于轮廓、纹理、视角等不同环境的增量式学习,例如在Caltech-101库分类任务中准确率超出VGGNet 5.08%、AlexNet 3.44%。     

一种动态的滚动式传送网规划方法

运营商面临网络高速发展和“降价提速”的双重压力,传送网的建设需要考虑长远发展,建设方案不仅需要满足近期业务,也要符合未来业务发展方向.通过分析传统滚动规划方法的不足,以规划期发展目标为导向,提出了一种动态的滚动式传送网规划方法,将业务发展趋势对网络的影响从模糊的人工思考转变为定量科学的计算方法,避免了网络建设因无法适应业务变化而引起投资的浪费.     

盲信号分离

阵列处理和数据分析的一个典型问题是从混合的观测数据向量中恢复不可观测的各个源信号.盲信号分离是解决这一问题的一门新技术,近几年吸引了信号处理学界和神经网络学界众多学者的研究兴趣.本文将以独立分量分析和非线性主分量分析为主要对象,综述盲信号分离技术的理论、方法及应用等方面的发展,并作有关展望.     

Analytical modeling and resource planning for cognitive radio systems

Cognitive radio heralds the next step in the evolution of wireless communications. In this paper, an analytical model for infrastructure based cognitive radio systems is proposed, and its performance is evaluated under bursty traffic scenarios in a multiple cell environment. Performance metrics like probabilities of dropping and blocking for primary and secondary users as well as forced termination and forced frequency handoff for secondary users are investigated, and the analytical model is verified with simulations. In addition to the analytical model, a new resource planning method is proposed to compensate for uneven traffic load distribution. The proposed method considers offered traffic, hop count to the heavily loaded cell, and velocity of mobile users during resource planning and performs better in terms of probability of blocking, dropping, and forced termination. The proposed method is promising in balancing the system performance measures, yet there is room for further improvement for finding a closed formula for the proposed analytical model. Copyright © 2010 John Wiley & Sons, Ltd.     

Widrow-Hoff神经网络学习规则的应用研究

基于线性神经网络原理,提出线性神经网络的模型,并利用Matlab实现Widrow-Hoff神经网络算法。分析Matlab人工神经网络工具箱中有关线性神经网络的工具函数,最后给出线性神经网络在系统辨识中的实际应用。通过对线性神经网络的训练,进一步验证Widrow-Hoff神经网络算法的有效性,以及用其进行系统辨识的高精度拟合性。     

区域配网规划和改造对提高供电可靠性研究

配电网供电可靠性是当下社会范围内共同关注的焦点话题,而供电可靠性容易受到硬件与软件层面相关因素的影响而有所下滑,导致供电效率和稳定性大受影响,严重时甚至可能引发安全事故。为了提高供电可靠性,可以从区域配网规划和改造入手,针对区域配网现状进行分析,研究其对供电可靠性的影响,再根据分析结果针对性地执行区域配网规划改造方案,能够显著提升供电可靠性。