GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference最新文献

Performance Analysis of IEEE 802.11 Ad Hoc Networks with Cooperative ARQ in the Presence of Hidden and Exposed Terminals 隐藏终端和暴露终端下具有协同ARQ的IEEE 802.11 Ad Hoc网络性能分析

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/glocom.2009.5425387

G. Kormetzas, J. Alonso-Zarate, L. Alonso, C. Verikoukis

引用次数: 2

Receiver Statistics for Spectrum Monitoring While Communicating 用于通信时频谱监控的接收机统计

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425215

S. Boyd, J. Michael Frye, M. Pursley, Thomas C. Royster IV

引用次数: 6

Performance Evaluation of Selected Packet Dispatching Schemes for the CBC Switches CBC交换机所选分组调度方案的性能评价

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426083

J. Kleban, S. Piotrowski

引用次数: 4

Improvement of Capacity and Energy Saving of VoIP over IEEE 802.11 WLANs by a Dynamic Sleep Strategy 基于动态睡眠策略的IEEE 802.11无线局域网VoIP容量和节能研究

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425518

Chenyuan Zhu, Hui Yu, Xinbing Wang, Hsiao-Hwa Chen

引用次数: 7

Transmission Strategies and Sum Rate Maximization in Multi-User TDD Systems 多用户TDD系统中的传输策略与总速率最大化

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425744

U. Salim, D. Slock

{"title":"Transmission Strategies and Sum Rate Maximization in Multi-User TDD Systems","authors":"U. Salim, D. Slock","doi":"10.1109/GLOCOM.2009.5425744","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5425744","url":null,"abstract":"In a system comprising of a multiple antenna enabled base station (BS) and multiple single antenna users, very high data rates can be obtained if BS transmits to multiple users simultaneously. This simultaneous transmission to multiple users over the same bandwidth is realizable only if BS knows the forward channels linking its transmit antennas to these users. \u0000 \u0000We study a time-division duplexed (TDD) broadcast channel with initial assumption of channel information neither at the BS nor at the users' side. We propose two simple transmission strategies, one where users feedback independent of their channel realizations (earlier proposed in [1]) and the other where users feedback based upon their channel realizations. We derive a lower bound of the sum rate which reflects the rate loss compared to a system with perfect channel knowledge and the corresponding approximate sum rate expressions are developed for both schemes. These expressions capture the benefits of channel feedback, multi-user diversity and inter-user interference cancellation, and the cost of exchange of information required, and hence can be optimized for the sum rate maximization.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"49 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":"115390882","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: 0

Event Reporting on Continuous Monitoring Wireless Sensor Networks 连续监测无线传感器网络的事件报告

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425296

M. E. Rivero-Angeles, N. Bouabdallah

引用次数: 10

On the Performance Gains of VoIP Aggregation and ROHC over a WirelessMAN-OFDMA Air Interface 基于无线man - ofdma空中接口的VoIP聚合和ROHC性能提升研究

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425317

Jarno Pinola, E. Piri, K. Pentikousis

{"title":"On the Performance Gains of VoIP Aggregation and ROHC over a WirelessMAN-OFDMA Air Interface","authors":"Jarno Pinola, E. Piri, K. Pentikousis","doi":"10.1109/GLOCOM.2009.5425317","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5425317","url":null,"abstract":"A growing number of mobile WiMAX deployments are in progress world-wide and the technology is anticipated to play a key role in next generation mobile broadband wireless networks. However, although the theoretical potential of WiMAX technologies is already well established, independent, publicly released, thorough evaluations of WiMAX network performance in the real world are yet to become available. In this study, we consider synthetic Voice over IP (VoIP) performance over the WirelessMAN-OFDMA air interface of a state of the art mobile WiMAX testbed operating at the 3.5 GHz frequency band and quantify the benefits of employing VoIP aggregation and Robust Header Compression (ROHC). Although VoIP aggregation and ROHC have been proposed and thoroughly evaluated through simulation and modeling, this is the first study to present empirical results from employing them over the Wireless MANOFDMA air interface of a real-world WiMAX system. Our results indicate that the combined use of VoIP aggregation and ROHC can increase the number of flows sustained without loss by approximately a factor of three.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"128 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":"115695562","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: 9

Irregular Sensing Range Detection Model for Coverage Based Protocols in Wireless Sensor Networks 无线传感器网络中基于覆盖协议的不规则感知距离检测模型

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425640

Xin Fei, A. Boukerche, R. B. Araujo

{"title":"Irregular Sensing Range Detection Model for Coverage Based Protocols in Wireless Sensor Networks","authors":"Xin Fei, A. Boukerche, R. B. Araujo","doi":"10.1109/GLOCOM.2009.5425640","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5425640","url":null,"abstract":"In order to optimize the performance of wireless sensor networks, based on the boolean sensing model (BSM) many coverage preserving protocols have been proposed; however, BSM model is too idealistic to be maintained in many applications. Sensing range could be changed by environment factors such as the obstacle and weather condition. BSM based protocols can not achieve their design goals because of the errors of coverage measurement. In this paper, we proposed our irregular sensing range detection model (RDM) which solves the range detection problem through estimating the sensing range by a revised α-shape algorithm. A RDM based distributed algorithm for measuring the area coverage is proposed. Its complexity are analyzed and compared to the centralized α-shape based area coverage algorithm. A set of simulation experiments is carried out to evaluate the performance of our algorithm in terms of coverage accuracy, coverage error and complexity. The result shows that the boolean sensing model will lead to errors when obstacles are injected into environment; however, our range detection model can detect the changes of environments and help protocols adapt to it.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"109 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":"115731226","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: 25

A New Class of MDS Erasure Codes Based on Graphs 一类新的基于图的MDS擦除码

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426134

N. Puttarak, Phisan Kaewprapha, B. Ng, T. Li

引用次数: 2

An Adaptive Rate Assignment Strategy for CDMA2000 IS-856 Subject to RAB Delay 考虑RAB延迟的CDMA2000 IS-856自适应速率分配策略

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426040

Kaveh Moezzi, K. Jalaleddini, A. Aghdam, M. Alasti, V. Tarokh

引用次数: 5