GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference最新文献_第8页

Decentralized Cooperative Positioning and Tracking Based on a Weighted Sign Algorithm for Wireless Sensor Networks 基于加权符号算法的无线传感器网络分散协同定位与跟踪

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426290

Dong-Shing Wu, Chin-Liang Wang

{"title":"Decentralized Cooperative Positioning and Tracking Based on a Weighted Sign Algorithm for Wireless Sensor Networks","authors":"Dong-Shing Wu, Chin-Liang Wang","doi":"10.1109/GLOCOM.2009.5426290","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5426290","url":null,"abstract":"Based on the requirements of low energy consumption and high bandwidth efficiency, a primary area of study is how to improve the estimation accuracy and tracking performance for target localization in wireless sensor networks. In this paper, we propose a weighted sign algorithm (WSA) for positioning and tracking in wireless sensor networks. In terms of the reliability of distance estimation, the location estimation of a target is formulated as a weighted least squares (WLS) problem, which is solved based on the WSA in an iterative and decentralized manner. We also propose a cooperative message-passing algorithm for inter-sensor information exchange, adaptively picking the participating sensor nodes, and making the paths for cyclic routing in the network. On each routing path, a target's location estimate is updated on each cycle and continues among the participating sensor nodes that surround the target. To ensure that the WSA-based scheme has a convergence behavior, a convergence analysis is given. Computer simulation results demonstrate that, as compared with previous methods, our proposed scheme has a faster convergence rate, better location accuracy, and improved tracking performance.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116466842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Effect of Dynamic Spectrum Access on Transport Control Protocol Performance 动态频谱接入对传输控制协议性能的影响

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426234

Y. Kondareddy, P. Agrawal

引用次数: 30

Downlink Distributed Beamforming through Relay Networks 通过中继网络的下行分布式波束形成

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426225

Yi Zheng, S. Blostein

引用次数: 13

A Decentralized Framework for Dynamic Downlink Base Station Cooperation 一种分散的动态下行基站合作框架

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425212

Sheng Zhou, Jie Gong, Z. Niu, Yunjian Jia, Peng Yang

{"title":"A Decentralized Framework for Dynamic Downlink Base Station Cooperation","authors":"Sheng Zhou, Jie Gong, Z. Niu, Yunjian Jia, Peng Yang","doi":"10.1109/GLOCOM.2009.5425212","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5425212","url":null,"abstract":"Multiple Base Station (Multi-BS) cooperation has been considered as a promising mechanism to suppress co-channel interference and boost the capacity for cellular networks. However, the large feedback and signaling overhead hinder it from practice. Therefore, limited cooperation among BSs is recognized as a good tradeoff between the performance gain and the relevant cost. In this paper, the whole network is divided into small disjointing BS cooperation groups, namely, clusters. A decentralized framework is proposed to facilitate the BS cluster formation on the downlink, in order to maximize the sum-rate of the scheduled mobile stations (MSs) under the cluster size constraint. Moreover, an efficient BS negotiation algorithm is designed for cluster formation, of which the feedback overhead per MS is irrelevant to the network size, and the number of iteration rounds scales very slowly with the network size. Simulations show that our strategy leads to significant sum-rate gain over static clustering and performs almost the same as the centralized greedy approach. With its low signaling overhead and complexity, the proposed framework is well suited for implementation in large-scale cellular networks.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"27 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124437883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40

LDPC Decoding Strategies for Two-Dimensional Magnetic Recording 二维磁记录LDPC解码策略

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425930

A.R. Krishnan, R. Radhakrishnan, B. Vasic

引用次数: 17

Cooperative Uplink of Two Mobile Stations with Network Coding Based on the WiMax LDPC Code 基于WiMax LDPC码的两移动站网络编码协同上行

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425675

Lena Chebli, C. Hausl, Georg Zeitler, R. Koetter

引用次数: 21

Integrated Approach to Proportional-Fair Resource Allocation for Multiclass Services in an OFDMA System OFDMA系统中多类业务资源比例公平分配的集成方法

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425291

N. Ruangchaijatupon, Yusheng Ji

{"title":"Integrated Approach to Proportional-Fair Resource Allocation for Multiclass Services in an OFDMA System","authors":"N. Ruangchaijatupon, Yusheng Ji","doi":"10.1109/GLOCOM.2009.5425291","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5425291","url":null,"abstract":"This paper presents the novel resource allocation scheme for multiclass services in the downlink OFDMA system, in which the frame-based transmission with multiple subchannels and multiple time slots is used. As system utilization and fairness are necessary, the scheme is based on Proportional Fairness (PF) utility function. Two main service classes are considered. One is the guaranteed service class. The other is the nonguaranteed service class. The scheme guarantees the minimum bit rate for the former class. The PF-based optimization problem with minimum bit rate requirement is formed and solved by using the Lagrange multiplier method with relaxed constraints. The novel PF-based utility function is derived and used for this class. The non-guaranteed class is served after the guaranteed class by using the conventional PF utility function. Extensive simulation with user mobility and finite backlog is conducted. The results show that the proposed scheme is able to satisfy the minimum rate requirement for the guaranteed class with moderate system utilization. Furthermore, within the same class, the scheme can provide very high throughput fairness.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126386825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

An Efficient Key Management Scheme for Live Streaming 一种高效的实时流媒体密钥管理方案

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426232

Xingyu Li, H. V. Zhao

引用次数: 1

Forecasting-Based Sampling Decision for Accurate and Scalable Anomaly Detection 基于预测的采样决策用于精确和可扩展的异常检测

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426221

F. Hashim, A. Jamalipour

引用次数: 1

Bandpass Sampling Digital Frontend Architecture for Multi-Band Access Cognitive Radio 多频带接入认知无线电的带通采样数字前端架构

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426260

Jaehyung Kim, Hongmei Wang, Hyungjung Kim, Jin-Up Kim

引用次数: 7