34th IEEE Sarnoff Symposium最新文献

Adaptive multiresolution modulation for multimedia traffic in dynamic wireless environment 动态无线环境下多媒体业务的自适应多分辨率调制

34th IEEE Sarnoff Symposium Pub Date : 2011-06-16 DOI: 10.1109/SARNOF.2011.5876475

O. Odejide, C. Bazil, A. Annamalai

{"title":"Adaptive multiresolution modulation for multimedia traffic in dynamic wireless environment","authors":"O. Odejide, C. Bazil, A. Annamalai","doi":"10.1109/SARNOF.2011.5876475","DOIUrl":"https://doi.org/10.1109/SARNOF.2011.5876475","url":null,"abstract":"Modern day wireless systems requires the ability to support multitude of services with different reliability requirements. Challenges of achieving reliable multimedia services include limited battery resources at mobile nodes, coupled with hostile propagation environments. We believe that adaptive signaling techniques can be designed to take advantage of differences in the quality of service (QoS) requirements among different types of multimedia traffic besides improving spectral efficiency. Furthermore, we also demonstrate that it is essential to have a readily invertible equation for different multiresolution modulation types in order to automatically execute an Adaptive Multiresolution Modulation (AMM) scheme. Exponential approximation was used for generating invertible expression for asymmetrical quadrature amplitude modulation. We also generated the curve fitting approximations for the average BER probability and individual BER for 4-PSK, 8-PSK, 16-QAM and 64-QAM by using the complementary error function approximation. In this article, we demonstrate the efficacy of the complimentary error function approximation as a better curve fitting approximation in comparison to exponential approximation. We also illustrated the benefits that can be gained from using the adaptive multiresolution modulation.","PeriodicalId":339596,"journal":{"name":"34th IEEE Sarnoff Symposium","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123672637","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

Advanced diagnostic system with ventilation on demand for underground mines 先进的地下矿井随需通风诊断系统

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876449

Wisam Farjow, Mohamed Daoud, Xavier N Fernando

{"title":"Advanced diagnostic system with ventilation on demand for underground mines","authors":"Wisam Farjow, Mohamed Daoud, Xavier N Fernando","doi":"10.1109/SARNOF.2011.5876449","DOIUrl":"https://doi.org/10.1109/SARNOF.2011.5876449","url":null,"abstract":"After a series of recent world wide mine tragedies, ranging from collapsing mines in China and Colombia to trapped miners in Chile, the importance of robust and reliable underground communication networks has become evident once again. A reliable underground communication network in mines will not only facilitate the day to day operations but will also help save many lives. However, designing reliable and robust underground network has always been a challenge due to the special nature of mines. These extreme and harsh mine conditions require special communication systems like leaky feeders, Through The Earth (TTE), and wireless mesh networks. While TTE is used in case of disaster recovery and locating trapped miners and wireless mesh is used for sensing the mine conditions, the leaky feeder system can be considered the most popular communication system used for daily operations. It carries voice, video, and data; however, the leaky feeder system is not reliable and problems are hard to diagnose. This paper describes a novel advanced diagnostic system with a ventilation on demand capability that enhances leaky feeders; this system will not only allow monitoring of all underground nodes connected to the leaky feeder. It will also allow remote programming from the control room above ground and monitoring the losses in the leaky feeder in the sense that the infrastructure will be able to monitor itself. Ventilation on demand is another advantage of this system as it will operate the underground mine ventilation fans depending on data collected from sensors attached to the leaky feeder. This will provide huge power savings since ventilation fans are responsible for about 60% of power consumption in mines. The system is described here along with simulation results proving its performance.","PeriodicalId":339596,"journal":{"name":"34th IEEE Sarnoff Symposium","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121810055","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: 5

Comparison of energy detection using averaging and maximum values detection for dynamic spectrum access 动态频谱接入中能量平均检测与最大值检测的比较

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876479

J. Boksiner, S. Dehnie

{"title":"Comparison of energy detection using averaging and maximum values detection for dynamic spectrum access","authors":"J. Boksiner, S. Dehnie","doi":"10.1109/SARNOF.2011.5876479","DOIUrl":"https://doi.org/10.1109/SARNOF.2011.5876479","url":null,"abstract":"Opportunistic Dynamic Spectrum Access (DSA) systems are emerging as a key to enable the Department of Defense (DoD) to meet its technology requirements for access to the electromagnetic spectrum. One of the main goals of DSA is to protect incumbent spectrum users from interference that could be caused by DSA emitters. One of the ways to accomplish this is through spectrum sensing as means to enable the DSA system to detect the presence of emissions from other spectrum users. A simple and practical approach to spectrum sensing is energy sensing that detects other users on the basis of the total signal energy in channel of a given bandwidth. In this paper our goal is to investigate the performance of energy sensing for constant and random power signals using two approaches. The first approach that has been investigated extensively in the past uses the total energy, or equivalent average power, over the entire signal bandwidth as the basis for detecting incumbent signals. The second approach, which needs to be used for wideband signals if the bandwidth of the incumbent signal is not known, uses signal energy in individual FFT bins as the basis for detection. We examine the performance of these detection approach under the Neyman-Pearson criterion and also using the Chernoff-Stein Lemma to obtain the achievable detection probability as a function of detection delay. We find that the method using average over the entire signal achieves better performance than the method that uses values of individual bins. This shows the importance of prior knowledge that can be expressed as radio policy to enable coexistence of DSA with incumbent systems.","PeriodicalId":339596,"journal":{"name":"34th IEEE Sarnoff Symposium","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441710","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: 8

Novel rank-constrained maximum capacity MIMO designs under practical per-antenna power constraint 实用单天线功率约束下的新型秩约束最大容量MIMO设计

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876469

I. Lu, Jialing Li

引用次数: 3

Enabling fair and privacy-preserving applications using reconciliation protocols on ordered sets 在有序集上使用协调协议启用公平和保护隐私的应用程序

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876461

D. Mayer, Georg Neugebauer, Ulrike Meyer, S. Wetzel

引用次数: 9

Ubiquity and integration in m-Health: Implications for brand management 移动医疗的普遍性和整合:对品牌管理的启示

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876453

D. Helman, E. Addeo, D. Walters

引用次数: 6

Bifurcations of nonlinear circuits with mixed mode and chaotic oscillations 混合模式和混沌振荡非线性电路的分岔

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876472

W. Marszalek, Z. Trzaska

引用次数: 1

Node geometry and broadband jamming in noncooperative relay networks under received power constraint 接收功率约束下非合作中继网络中的节点几何与宽带干扰

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876476

Kanghee Lee, H. Kwon, Yanwu Ding, Y. Ibdah, Zuojun Wang, Yu Bi

引用次数: 22

Mobility management for dense networks 面向密集网络的移动性管理

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876483

A. Reznik, Chunxuan Ye, Yuying Dai, Samian Kaur, J. Tomici

引用次数: 1

Tagged user approach for finite-user finite-buffer S-Aloha analysis in AWGN and frequency selective fading channels AWGN和频率选择性衰落信道中有限用户有限缓冲S-Aloha分析的标记用户方法

34th IEEE Sarnoff Symposium Pub Date : 2011-05-03 DOI: 10.1109/SARNOF.2011.5876474

Sanqing Hu, Yu-dong Yao, A. Sheikh, M. A. Haleem

引用次数: 8