2006 International Zurich Seminar on Communications最新文献_第2页

Performance of Spatially Distributed Large Interference Relay Networks 空间分布大干扰中继网络的性能

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649112

T. Riihonen, K. Doppler, A. Hottinen

引用次数: 4

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649086

Manuel Costa, Jon Crowcroft, Miguel Castro, A. Rowstron, Lidong Zhou, Lintao Zhang, Paul Barham

{"title":"Stopping Internet Epidemics","authors":"Manuel Costa, Jon Crowcroft, Miguel Castro, A. Rowstron, Lidong Zhou, Lintao Zhang, Paul Barham","doi":"10.1109/IZS.2006.1649086","DOIUrl":"https://doi.org/10.1109/IZS.2006.1649086","url":null,"abstract":"As we become increasingly dependent on computers connected to the Internet, we must protect them from worm attacks. Worms can gain complete control of millions of hosts in a few minutes, and they can use the infected hosts for malicious activities such as distributed denial of service attacks, relaying spam, corrupting data, and disclosing confidential information. Since worms spread too fast for humans to respond, systems that strive to contain worm epidemics must be completely automatic. We propose Vigilante, a new end-to-end architecture to contain worms automatically that addresses the limitations of network-centric systems. Vigilante relies on collaborative worm detection at end hosts, but does not require hosts to trust each other. In Vigilante, hosts run instrumented software to detect worms. We introduce dynamic dataflow analysis, a broad-coverage detection algorithm, and we show how to integrate other detection mechanisms into the Vigilante architecture. Upon worm detection, hosts generate self-certifying alerts (SCAs), a new type of security alert that can be inexpensively verified by any vulnerable host. SCAs are then broadcast over a resilient overlay network that can propagate alerts with high probability, even when under active attack. Finally, hosts receiving an SCA generate protective filters with dynamic data and control flow analysis of the vulnerable software. Our results show that Vigilante can contain fast spreading worms that exploit unknown vulnerabilities without false positives. Vigilante does not require any changes to hardware, compilers, operating systems or to the source code of vulnerable programs, and therefore can be used to protect software as it exists today in binary form","PeriodicalId":405389,"journal":{"name":"2006 International Zurich Seminar on Communications","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132868797","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

Analysis of Cellular CDMA Systems under UWB Interference 超宽带干扰下的蜂窝CDMA系统分析

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649097

C. Fischer

引用次数: 2

On Practical Network Coding for Wireless Environments 无线环境下实用网络编码研究

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649085

D. Katabi, Sachin Katti, Wenjun Hu, Hariharan Rahul, M. Médard

引用次数: 37

Review of Rate Regions for Interference Channels 干扰信道的速率区域研究进展

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649105

G. Kramer

引用次数: 119

Resource Allocation in Multi-hop Wireless Networks 多跳无线网络中的资源分配

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649087

A. Eryilmaz, R. Srikant

引用次数: 18

Network Coding Techniques for Network Monitoring: a Brief Introduction 网络监控中的网络编码技术简介

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649084

C. Fragouli, A. Markopoulou

引用次数: 4

Upper limits on performance from two hop relaying in a high data rate cellular system 高数据速率蜂窝系统中两跳中继的性能上限

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649113

A. K. Dinnis, J. Thompson

引用次数: 2

Operator Assisted Dynamic Spectrum Assignment with Dual Beacons 双信标载波辅助动态频谱分配

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649077

S. Mangold, A. Jarosch, C. Monney

{"title":"Operator Assisted Dynamic Spectrum Assignment with Dual Beacons","authors":"S. Mangold, A. Jarosch, C. Monney","doi":"10.1109/IZS.2006.1649077","DOIUrl":"https://doi.org/10.1109/IZS.2006.1649077","url":null,"abstract":"Dynamic spectrum assignment refers to a new approach for radio regulation. Whereas today either command-and-control licensing, or alternatively unlicensed bands are used to coordinate the radio spectrum utilization, it is envisioned to coordinate the spectrum utilization in a more flexible way with the help of dynamic spectrum assignment. With this new approach, radio systems will share spectrum either horizontally with distributed spectrum allocation such as listen-before-talk and equal rights to access the radio spectrum, or vertically, where so-called primary radio systems have higher priority to access the radio spectrum than the so-called secondary radio systems. Horizontal and vertical spectrum sharing are often discussed in the context of opportunistic spectrum usage and cognitive (secondary) radio. To guarantee the spectrum access priorities when spectrum is shared, and to coordinate the vertical spectrum sharing between primary and cognitive radio systems, beaconing concepts are often proposed but criticized for their poor reliability in hidden station scenarios. In this paper, we introduce an improved beaconing concept that is based on operator assistance with two instead of one single beacon. Our analysis illustrates that our proposed dual beacon concept provides high flexibility and at the same time improves the reliability of spectrum coordination","PeriodicalId":405389,"journal":{"name":"2006 International Zurich Seminar on Communications","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133069254","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: 7

Broadcasting over Two-Hop Relay Fading Channels 在两跳中继衰落信道上广播

2006 International Zurich Seminar on Communications Pub Date : 2006-02-21 DOI: 10.1109/IZS.2006.1649070

A. Steiner, S. Shamai

{"title":"Broadcasting over Two-Hop Relay Fading Channels","authors":"A. Steiner, S. Shamai","doi":"10.1109/IZS.2006.1649070","DOIUrl":"https://doi.org/10.1109/IZS.2006.1649070","url":null,"abstract":"We consider a two-hop relay channel, with stringent delay constraints, which require transmission without channel state information (CSI), where only decoders possess perfect CSI estimation. Various relaying protocols and single-user broadcasting strategies are studied. For a decode-and-forward (DF) relay several broadcasting strategies are considered. Then, for an amplify-and-forward (AF) relay, a maximal broadcasting achievable rate is analytically derived. A quantize-and-forward (QF) relay is also considered. When coupled with a single-level code at the source it uses codebooks matched to the received signal power and performs optimal minimal mean square error (MMSE) quantization. This scheme is simplified by a hybrid amplify-quantize-forward (AQF) relay, which scales the input, and performs optimal MMSE quantization with a single codebook. It is shown that the latter is optimal in means of throughput on the relay-destination link, while maintaining a lower coding complexity than the QF setting. A further extension of the AQF allows the relay to perform successive refinement quantization coupled with a matched multi-level code. Numerical results show that for high SNRs the broadcast approach over AF relay may achieve higher throughput gains than the other relaying protocols that were numerically tractable","PeriodicalId":405389,"journal":{"name":"2006 International Zurich Seminar on Communications","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134253400","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