2009 6th International Symposium on Wireless Communication Systems最新文献_第7页

Codebook design for communication in spread and nonspread space-time block codes-based systems 扩频和非扩频空时分组码系统通信的码本设计

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285271

M. Beko, J. Xavier, V. Barroso

引用次数: 3

On the decoding of single delay STTC using filter bank based multicarrier modulation 基于滤波器组的多载波调制的单延时STTC解码研究

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285274

C. Lélé, D. L. Ruyet, R. Zakaria

引用次数: 6

Optimization of link adaptation and HARQ schemes for multicast in high speed cellular networks 高速蜂窝网络中多播链路自适应和HARQ方案的优化

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285222

N. E. Heni, X. Lagrange, P. Maué

引用次数: 7

How many users should inform the BS about their channel information? 有多少用户需要告知BS他们的频道信息?

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285246

U. Salim, D. Slock

引用次数: 2

Linear precoding for mutual information maximization in MIMO systems MIMO系统中互信息最大化的线性预编码

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285230

M. Lamarca

引用次数: 59

Omni-directional characteristics over frequency range for UWB of modified planar antenna with an elliptical element on the dielectric substrate 介质基板上椭圆元件改进平面天线超宽带全频特性

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285289

T. Wakabayashi, H. Matsui

引用次数: 2

A resource management strategy for interconnected WLAN and UMTS networks based on user mobility, call renegotiation, and call reallocation 一种基于用户移动性、呼叫重新协商和呼叫重新分配的WLAN和UMTS互联网络资源管理策略

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285348

H. D. Monego, J. Oliveira, M. Ricardo

{"title":"A resource management strategy for interconnected WLAN and UMTS networks based on user mobility, call renegotiation, and call reallocation","authors":"H. D. Monego, J. Oliveira, M. Ricardo","doi":"10.1109/ISWCS.2009.5285348","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285348","url":null,"abstract":"The users of telecommunications services are demanding access to their subscribed services in mobile contexts. This demand leads to the development of mechanisms that enable the transference of service sessions between networks, seamlessly to the user. These mechanisms allow the operator to jointly manage its networks resources, providing a better service to its customers and, simultaneously, increasing its revenue. Starting from the UMTS and WLAN interconnection architecture defined by 3GPP, this paper presents a new strategy for joint radio resource management, suitable for contexts where these networks are interconnected. This strategy bases its decisions on criteria related to user mobility characteristics. The algorithm also introduces the possibility of renegotiating new calls and reallocating running calls from one access network to another. The new radio resource management strategy is compared with two well-known strategies, the former based on coverage area and the later based on load balancing. The comparison studies show the proposed strategy outperforms the other strategies in what concerns call blocking probability and applications QoS support. Besides, the proposed strategy tends to reduce the handoffs between networks.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121194737","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

A cross-layer architecture for service differentiation in multi-channel multi-radio Wireless Mesh Networks 一种用于多通道多无线电无线Mesh网络中业务区分的跨层体系结构

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285265

L. Bononi, M. D. Felice, A. Molinaro, S. Pizzi

{"title":"A cross-layer architecture for service differentiation in multi-channel multi-radio Wireless Mesh Networks","authors":"L. Bononi, M. D. Felice, A. Molinaro, S. Pizzi","doi":"10.1109/ISWCS.2009.5285265","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285265","url":null,"abstract":"Due to their self-configuration and auto-configuration properties, Wireless Mesh Networks (WMNs) are expected to support a plethora of applications, including traditional Internet services and novel multimedia applications. Service differentiation is needed to support applications with different Quality of Service (QoS) requirements. In this paper, we propose a novel cross-layer framework that provides efficient communication and service differentiation in multi-radio multichannel WMNs. The proposed solution includes a distributed channel allocation scheme, integrated in the routing protocol, and a multi-channel MAC protocol, inspired to the IEEE 802.11e EDCA (Enhanced Distributed Channel Access). At the MAC layer, we propose “fast-forwarding” mechanisms to reduce the contention delay of delay-sensitive applications in multi-hop topologies. At the network layer, the channel allocation scheme aims at loading channels with an equal number of per-class traffic flows. The simulation results confirm the effectiveness of the proposed scheme in providing differentiated treatment to traffic classes with different QoS requirements.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130778664","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: 2

Performance evaluation of intermittent receiver-driven data transmission on wireless sensor networks 无线传感器网络中间歇接收器驱动数据传输的性能评估

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285327

D. Kominami, M. Sugano, M. Murata, T. Hatauchi, Y. Fukuyama

{"title":"Performance evaluation of intermittent receiver-driven data transmission on wireless sensor networks","authors":"D. Kominami, M. Sugano, M. Murata, T. Hatauchi, Y. Fukuyama","doi":"10.1109/ISWCS.2009.5285327","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285327","url":null,"abstract":"An intermittent transmission control in the MAC layer protocol is very important for managing the energy consumption of wireless sensor networks. This research focuses on an intermittent receiver-driven data transmission (IRDT) protocol in which communication starts when multiple receiver nodes transmit their own IDs intermittently and a sender node receives them. This method aims at prolonging network life time under the conditions that data-generating frequency is comparatively small. In this paper, we clarify the performance characteristics of this method by comparing it with the low power listing (LPL) method, which is a sender-driven protocol. By simulation, we show that IRDT can result in a higher reduction of energy consumption than LPL, especially at small loads. We also propose an improved IRDT scheme. While all nodes have equal and constant intermittent intervals in the original IRDT, the improved IRDT changes each node's intermittent intervals adaptively. This achieves more than 98% packet collection ratio and 50% lower power consumption than adaptive LPL, which also sets the intermittent interval adaptively.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132233647","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: 27

Out-of-band distortion analysis of envelope tracking technique for power amplifiers 功率放大器包络跟踪技术的带外失真分析

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285285

Yasunori Suzuki, S. Narahashi, T. Nojima

引用次数: 2