localized multi-sensor multi-target tracking framework


A cross-layer resource allocation scheme for ICIC in LTE-Advanced


Research Article Journal of Network and Computer Applications, In Press, Corrected Proof, Available online 18 January 2011 Purchase $ 39.95 Zhaoming Lu, Yan Yang, Xiangming Wen, Ying Ju, Wei Zheng
Close preview | Related articles | Related reference work articles

Abstract | Figures/Tables | References


As a new technology, inter-eNB coordination has been included in LTE-Advanced study items. Moreover, the network architecture in LTE-Advanced system is modified to take into account coordinated transmission. In our study, we explore the problem of jointly optimizing the power level and scheduling of resource blocks for LTE-Advanced network based on orthogonal frequency division multiplexing (OFDM). We propose a distributed optimization scheme based on evolutionary potential games, and in the process of objective function modeling we employ the Lagrangian multiplier method to solve the constraint objective optimization problem. Then particle swarm optimization (PSO) method is adopted to find the optimal power allocation and scheduling for each resource block in the multi-cell framework. Numerical results prove that proposed algorithm notably improves the overall throughput, while user fairness is guaranteed. Importantly, additional computation and communication cost introduced by cross-layer optimization is also evaluated.

Article Outline

1. Introduction 2. Inter-cell interference analysis 3. Potential games 3.1. Definition 3.2. Existence and uniqueness of NE 4. A Lagrangian multiplier method for constraint objective function optimization 4.1. System throughput 4.2. Fairness criterion

4.3. A Lagrangian multiplier method 5. Cross-layer optimization algorithm based on potential games 5.1. Cooperation games modeling 5.2. PSO based method to solve extreme problem of multivariate function 5.3. Convergence to Nash equilibrium 6. Simulation analysis 6.1. Performance analysis 6.2. Cost analysis 7. Conclusions and future work Acknowledgements References Prediction-based data aggregation in wireless sensor networks:


Original Research Article Computer Communications, Volume 34, Issue 6, 3 May 2011, Pages 793-802 Purchase Guiyi Wei, Yun Ling, Binfeng Guo, Bin Xiao, Athanasios V.$ 41.95 Vasilakos
Combining grey model and Kalman Filter
Close preview | Related articles | Related reference work articles

Abstract | Figures/Tables | References


In many environmental monitoring applications, since the data periodically sensed by wireless sensor networks usually are of high temporal redundancy, prediction-based data aggregation is an important approach for reducing redundant data communications and saving sensor nodes’ energy. In this paper, a novel prediction-based data collection protocol is proposed, in which a double-queue mechanism is designed to synchronize the prediction data series of the sensor node and the sink node, and therefore, the cumulative error of continuous predictions data is reduced. aggregation Based on this protocol, are three




Grey-Model-based Data Aggregation (GMDA), Kalman-Filter-based Data

Aggregation (KFDA) and Combined Grey model and Kalman Filter Data Aggregation (CoGKDA). By integrating the merit of grey model in quick modeling with the advantage of Kalman Filter in processing data series noise, CoGKDA presents high prediction accuracy, low communication overhead, and relative low computational complexity. Experiments are carried out based on a real data set of a temperature and humidity monitoring application in a granary. The results show that the proposed approaches significantly reduce communication redundancy and evidently improve the lifetime of wireless sensor networks.

Article Outline

1. Introduction 2. Related work 3. Prediction-based data collection protocol 4. Grey model based data aggregation (GMDA) 5. Kalman-Filter-based Data Aggregation (KFDA) 5.1. Kalman-Filter-based prediction model 5.2. Kalman-Filter-based prediction algorithm 6. CoGKDA 6.1. Modeling 6.2. Combination weights 6.3. CoGKDA algorithm 7. Experiment and performance evaluation 7.1. Experiment setup 7.2. GMDA 7.3. KFDA 7.4. CoGKDA 7.5. Complexity and scalability

8. Conclusion Acknowledgements References


Energy efficient and perceived QoS aware video routing over Wireless

Original Research Article Ad Hoc Networks, Volume 9, Issue 4, June 2011, Pages 591-607 Dionisis Kandris, Michail Tsagkaropoulos, Ilias Politis, AnthonyPurchase $ 27.95 Tzes, Stavros Kotsopoulos
Multimedia Sensor Networks
Close preview | Related articles | Related reference work articles

Abstract | Figures/Tables | References


Wireless Sensor Networks (WSNs) have an ever increasing variety of multimedia based applications. Ιn these types of applications, network nodes should ideally maximize QoS and minimize energy expenditures in video communication. This article presents PEMuR, a novel dual scheme for efficient video communication, which aims at both energy saving and high QoS attainment. To achieve its objectives, PEMuR proposes the combined use of an energy aware hierarchical routing protocol with an intelligent video packet scheduling algorithm. The adopted routing protocol enables the selection of the most energy efficient routing paths, manages the network load according to the energy residues of the nodes and prevents useless data transmissions through the proposed use of an energy threshold. In this way, an outstanding level of energy efficiency is achieved. Additionally, the proposed packet scheduling algorithm enables the reduction of the video transmission rate with the minimum possible increase of distortion. In order to do so, it makes use of an analytical distortion prediction model that can accurately predict the resulted video distortion due to any error pattern. Thus, the algorithm may cope with limited available channel bandwidth by selectively dropping less significant packets prior to their transmission. Simulation results demonstrate the

effectiveness of the proposed scheme.

Article Outline

1. Introduction 2. Related work 2.1. Hierarchical routing protocols 2.2. Route selection schemes 2.3. Wireless video communication 2.4. Packet loss models 3. Proposed scheme overview 3.1. Energy efficient hierarchical routing protocol 3.2. Video packet scheduling 3.2.1. Video distortion model 3.2.2. Video transmission rate adaptation 3.3. PEMuR algorithm overview 4. Simulation setup description 5. Simulation results presentation 6. Simulation results evaluation 7. Conclusions References Vitae


Adaptive power-controlled MAC protocols for improved throughput in hardware-constrained cognitive radio networks

Original Research

Article Ad Hoc Networks, In Press, Corrected Proof, Available online 7Purchase $ 27.95 January 2011 Haythem Bany Salameh, Marwan Krunz
Close preview | Related articles | Related reference work articles

Abstract | Figures/Tables | References


Cognitive radios (CRs) are emerging as a promising technology to enhance spectrum utilization through opportunistic on-demand access. Many MAC protocols for cognitive radio networks (CRNs) have been designed assuming multiple transceivers per CR user. However, in practice, such an assumption comes at the cost of extra hardware. In this paper, we address the problem of assigning channels to CR transmissions in single-hop and multi-hop CRNs, assuming one transceiver per CR. The primary goal of our design is to maximize the number of feasible concurrent CR transmissions, and conserve energy as a secondary objective, with respect to both spectrum assignment and transmission power subject to interference constraint and user rate demands. The problem is formulated under both binary-level and multi-level spectrum opportunity frameworks. Our formulation applies to any power-rate relationship. For single-hop CRNs, a centralized polynomial-time algorithm based on bipartite matching that computes the optimal channel assignment is developed. We then integrate this algorithm into distributed MAC protocols that preserve fairness. For multi-hop ad hoc CRNs, we propose a novel distributed MAC protocol (WFC-MAC) that attempts to maximize the CRN throughput, assuming single transceiver radios but with “dual-receive” capability. WFC-MAC uses a cooperative assignment that relies only on information provided by the two communicating users. The main novelty in WFC-MAC lies in requiring no active coordination with licensed users and exploiting the dual-receive capability of radios, thus alleviating various channel access problems that are common to multi-channel designs. We conduct theoretical analysis of our MAC protocols, and study their performance via simulations. The results indicate that compared with CSMA/CA variants, our protocols significantly decrease the blocking rate of CR transmissions, and hence

improve network throughput.

Article Outline

1. Introduction 1.1. Previous research 1.2. Contributions 1.3. Organization 2. Problem formulation and design constraints 2.1. Network model 2.2. Feasibility constraints 2.3. Problem formulation 3. Optimal channel assignment 3.1. Proposed algorithm 3.2. Channel access protocol for single-hop CRNs 3.2.1. Assumptions 3.2.2. Operational details 3.3. Remarks and design variants 3.3.1. Granularity of channel assignment 3.3.2. Fairness properties of AW-MAC 3.3.3. RTS/CTS handshake in AW-MAC 3.3.4. Channel assignment with a multi-level frequency-dependent power constraint 3.3.5. AW-MAC with two transceivers 4. Distributed channel assignment for multi-hop CRNs 4.1. Challenges 4.2. Channel assignment 4.3. Channel access protocol 4.3.1. Protocol overview

4.3.2. Operational details 5. Throughput analysis 6. Performance evaluation 6.1. Simulation setup 6.2. Single-hop network 6.3. Multi-hop network 7. Conclusion References Vitae


On the role of infrastructure sharing for mobile network operators in

Original Research Article Computer Networks, In Press, Corrected Proof, Available online 28 February 2011 Purchase $ 31.50 Djamal-Eddine Meddour, Tinku Rasheed, Yvon Gourhant
emerging markets
Close preview | Related articles | Related reference work articles

Abstract | Figures/Tables | References


The traditional model of single ownership of all the physical network elements and network layers by mobile network operators is beginning to be challenged. This has been attributed to the rapid and complex technology migration compounded with rigorous regulatory requirements and ever increasing capital expenditures. These trends, combined together with the increasing

competition, rapid commoditization of telecommunication equipments and rising separation of network and service provisioning are pushing the operators to adopt multiple strategies, with network infrastructure sharing in the core and radio access networks emerging as a more radical mechanism to substantially and sustainably improve network costs. Through infrastructure sharing, developing countries and other emerging economies can harness the technological, market and regulatory developments that have fostered

affordable access to mobile and broadband services. Similarly, the network operators entering or consolidating in the emerging markets can aim for substantial savings on capital and operating expenses. The present paper aims to investigate the current technological solutions and regulatory and the technical–economical dimensions in connection with the sharing of mobile telecommunication networks in emerging countries. We analyze the estimated savings on capital and operating expenses, while assessing the technical constraints, applicability and benefits of the network sharing solutions in an emerging market context.

Article Outline

1. Introduction 2. Technical approaches for infrastructure sharing 2.1. Passive infrastructure sharing 2.2. Active infrastructure sharing 2.2.1. Antenna sharing 2.2.2. Base station sharing (Node B) 2.2.3. Sharing of base station controller (RNC) 2.2.4. Core network sharing 2.3. Roaming 2.4. Mobile virtual network operators (MVNOs) 2.5. Technical constraints of Infrastructure sharing 2.5.1. Technical constraints related to passive sharing 2.5.2. Technical constraints and drawbacks of active sharing Sharing of antennas Sharing NodeB Sharing the RNC Core network sharing

2.6. Outsourcing 3. Economic dimensions of network sharing 3.1. CAPEX/OPEX analysis 3.2. Emerging countries characteristics 4. Practical use case 4.1. General hypothesis 4.1.1. Results 4.1.2. Urban dense area 4.1.3. Sub-urban area 4.1.4. Rural area 4.2. Lessons learned and recommendation 5. Evolution toward the LTE 6. Regulatory aspects 7. Conclusions References Vitae


Testbed results of an opportunistic routing for multi-robot wireless

networks Original Research Article Computer Communications, In Press, Corrected Proof, Available online 13 January 2011 Purchase Dong Min Kim, Young Ju Hwang, Seong-Lyun Kim, Gwang-Ja Jin $ 41.95
Show preview | Related articles | Related reference work articles


An embedded multi-core biometric identification system


Research Article Microprocessors and Microsystems, In Press, Uncorrected Proof, Available online 17 March 2011 Purchase $ 35.95 G. Danese, M. Giachero, F. Leporati, N. Nazzicari
Show preview | Related articles | Related reference work articles


A holistic sensor network design for energy conservation and efficient data

Original Research Article Computer Networks, Volume 55, Issue 1, 7 January 2011, Pages 131-146 Zehua Zhou, Xiaojing Xiang, Xin Wang, Jianping Pan

Show preview |

PDF (760 K)


Related articles | Related reference work articles


protocol using Elliptic Curve Cryptosystem for mobile commerce Original Research Article Expert Systems with Applications, Volume 38, Issue 8, August 2011, Pages 9900-9907 Purchase Yu-Fang Chung, Yu -Ting Chen, Tzer-Long Chen, Tzer-Shyong$ 41.95 Chen
An agent-based English auction
Show preview | Related articles | Related reference work articles

Research highlights

? We construct an ECC-based mobile auction agent model, which allows the bidders to participate in online auctions through a mobile agent. ? The model, provided with low computation amount and small key size, reaches to enhance the efficiency in generating keys, bidding and verifying. ? The Model also satisfies the requirements of an online auction protocol. Congestion control in wireless links based on selective delivery of


Original Research Article Signal Processing: Image Communication, Volume 26, Issue 2, February 2011, Pages 105-115 Purchase $ 31.50 JariKorhonen, Andrew Perkis, Ulrich Reiter
erroneous packets
Show preview | Related articles | Related reference work articles


Joint opportunistic power and rate allocation for wireless ad hoc

networks: An adaptive particle swarm optimization approach Original Research Article Journal of Network and Computer Applications, In Press,Purchase $ 39.95 Corrected Proof, Available online 17 March 2011 Songtao Guo, Chuangyin Dang, Xiaofeng Liao
Show preview | Related articles | Related reference work articles


Exploiting channel memory for multiuser wireless scheduling without

channel measurement: Capacity regions and algorithms Original Research Article Performance Evaluation, In Press, Corrected Proof, Available online 5 February 2011 Chih-ping Li, Michael J. Neely
Show preview | Related articles | Related reference work articles

TDTD-SCDMA 基带软件开发工程师
查看公司简介>> 查看公司简介>>

粉丝团 (9527)|

公司行业: 公司行业: 公司性质: 公司性质:

通信/电信/网络设备 国企


公司规模: 公司规模: 500 人以上


人力资源中心(上海平台) 人力资源中心(上海平台)
联 系 人:李小姐

发布日期: 工作年限: 职位描述

2011-04-08 一年以上

工作地点: 学 历:

上海-浦东新区 硕士



高薪急聘, 日前入职。 高薪急聘,需要 12 月 31 日前入职。 工作职责 1、从事 TD-SCDMA 基带物理层设计开发工作; 2、对物理层算法进行仿真、优化和 DSP 实现; 3、对物理层信令进行开发和实现; 4、参与实验室环境业务联调; 任职要求 1、对数字信号处理(DSP)芯片有一定的了解; 2、熟悉通讯原理; 3、熟练使用 C、汇编进行编程; 4、接触过相关通信协议,了解 TD-SCDMA NodeB 通信协议更佳

5、能适应艰苦的工作环境,能够经常加班; 6、具有较好的沟通、学习能力; 联系方式 电子邮箱: ztejob@zte.com.cn;ma.junfeng@zte.com.cn;liu.jun_6@zte.com.cn

比比你的竞争力 『 收藏 』 『 推荐给朋友 』 『 该公司其他职位 』 『 打印 』

粉丝团 (9527)|

中兴通讯是全球领先的综合性通信制造业上市公司, 是近年全球增长最快的通信解决方案提供 商之一。 1985 年,中兴通讯成立。1997 年,中兴通讯 A 股在深圳证券交易所上市。2004 年 12 月,中 兴通讯作为中国内地首家 A 股上市公司成功在香港上市。2007 年,根据香港会计准则,中兴 通讯主营业务收入超过 340 亿元,其中,国际收入达 57.8%。同时,凭借优异的全球业绩,中 兴通讯 2007 年跻身美国《商业周刊》 “中国十大重要海外上市公司”,成为唯一上榜的中国 通信设备企业。 作为在香港和深圳两地上市的大型通信制造业上市公司, 中兴通讯以满足客户需求为目标, 为 全球客户提供创新性、客户化的产品和服务,帮助客户实现持续赢利和成功,构建自由广阔的 通信未来。凭借有线产品、无线产品、业务产品、终端产品等四大产品领域的卓越实力,中兴 通讯已成为中国电信市场最主要的设备提供商之一, 并为全球 135 多个国家的 500 多家运营商 提供优质的、高性价比的产品与服务。 中兴通讯是中国重点高新技术企业、 技术创新试点企业和国家 863 高技术成果转化基地, 承担 了近 30 项国家“863”重大课题, 是通信设备领域承担国家 863 课题最多的企业之一, 公司每 年投入的科研经费占销售收入的 10%左右,并在美国、印度、瑞典及国内设立了 16 个研究中 心。 立足中国,放眼全球。早在 1995 年,中兴通讯就启动了国际化战略,是中国高科技领域最早 并最为成功实践 “走出去”战略的标杆企业。中兴通讯国际市场“十年磨一剑”,已相继与 和记电讯、法国电信、英国电信、沃达丰、西班牙电信、加拿大 Telus 等全球顶级运营商及跨 国运营商建立了长期合作关系,并持续突破发达国家的高端市场。 未来,中兴通讯将以“人才国际化为根本,市场国际化为重点,资本国际化为依托”,积极迎 接挑战,全力以赴为客户创造价值和成功,打造享誉全球的中兴通讯品牌,力创世界级卓越企 业。

应聘更多中兴通讯职位,请登陆中兴通讯社会招聘网站 http://job.zte.com.cn/ 公司网站:http://www.zte.com.cn