2009 6th International Symposium on Wireless Communication Systems最新文献_第5页

Cross-ambiguity function of weighted pulse trains with Oppermann sequences Oppermann序列加权脉冲序列的交叉模糊函数

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285220

Momin Jamil, Hans-Jürgen Zepernick, M. Pettersson

引用次数: 2

Performance analysis of binary DPSK modulation schemes over Hoyt fading channels 二进制DPSK调制方案在Hoyt衰落信道上的性能分析

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285256

N. Hajri, N. Youssef, M. Pätzold

{"title":"Performance analysis of binary DPSK modulation schemes over Hoyt fading channels","authors":"N. Hajri, N. Youssef, M. Pätzold","doi":"10.1109/ISWCS.2009.5285256","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285256","url":null,"abstract":"This paper presents a performance analysis of differential phase shift keying (DPSK) modulation schemes over Hoyt fading channels. Based upon the theory of DPSK modulation and a recently derived formula for the probability density function (PDF) of the differential phase between two Hoyt vectors contaminated by additive white Gaussian noise (AWGN), the bit error probability (BEP) for DPSK systems with noncoherent demodulation over Hoyt channels is analyzed. In the analysis, the correlation between adjacent bits is taken into account. The obtained theoretical results are fully validated first by reducing them to the corresponding known solutions for the Rayleigh fading distribution being a special case of the Hoyt distribution and second by comparing them with results obtained from computer simulations. The analysis of the BEP performance is illustrated by numerical examples given for the case of a mobile-to-mobile (M2M) Hoyt fading channel by considering various values of the fading channel characteristics and the system parameters. It is demonstrated that the Hoyt fading channel leads to poor BEP performance compared to the Rayleigh fading channel.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"11 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":"127625761","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

Vertical handover among broadcast networks 广播网络之间的垂直切换

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285298

G. Tamea, T. Inzerilli, Paolo Rea, R. Cusani

引用次数: 6

Low power medium access control for body-coupled communication networks 体耦合通信网络的低功耗介质访问控制

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285315

S. Corroy, H. Baldus

{"title":"Low power medium access control for body-coupled communication networks","authors":"S. Corroy, H. Baldus","doi":"10.1109/ISWCS.2009.5285315","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285315","url":null,"abstract":"Body-coupled communication (BCC) is a promising technology that enables wireless communication around and limited to the human body. It consists in generating low-power electric fields at the surface of the human body for transmiting signals. Its physical (PHY) layer has several advantages over classical radio frequency (RF) PHY layers, e.g., IEEE 802.15.4, for body-area networks (BANs), like a better robustness to body shadowing and a greater energy efficiency. From the medium access control (MAC) point of view, BCC BAN networks are a sub-class of wireless sensor networks (WSNs). Because WSN nodes are battery-powered device with limited energy capacity, energy efficiency is a key requirement for many applications. A low power MAC protocol is one of the component that enables to fulfill such a requirement. However current solutions developed so far by the scientific community are solely targeting RF systems. The properties of the BCC PHY layer are such that using those solutions would lead to inefficient energy usage. Therefore we developed and present in this paper AdaMAC a new MAC protocol that takes into account the specific properties of the BCC PHY layer. Compared to state-of-the-art protocols AdaMAC performs better in terms of reliability, latency and energy efficiency when applied to BCC systems.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"29 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":"131187455","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

Full interference model in wireless sensor network simulation 无线传感器网络仿真中的全干扰模型

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285349

Hengguang Li, P. Mitchell

引用次数: 10

Fully software OFDM modulation in vehicular, highly time-variant channels. An implemented technology and its results 全软件OFDM调制在车辆，高度时变信道。实现的技术及其结果

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285237

V. Pellegrini, M. Luise

{"title":"Fully software OFDM modulation in vehicular, highly time-variant channels. An implemented technology and its results","authors":"V. Pellegrini, M. Luise","doi":"10.1109/ISWCS.2009.5285237","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285237","url":null,"abstract":"Transferring large amounts of information to fast moving vehicles on the highway has always been difficult task for any employed wireless transmission system, due to channel's heavy double time / frequency selectivity. Still, the possibility to make such delivery both possible and cost-efficient remains highly interesting for applications including, but not limited to, traffic data delivery, broadcasting of passenger-aimed informational video content. Currently, in-car information / entertainment systems suffer from a heavy limitation: they can only be fed by GPS navigation data (i.e. no realtime traffic status information) and by local multimedia content stored within the car (i.e. no live multimedia broadcasting). In this paper we present an implemented and tested Software Defined Radio technology which we developed bottom up from scratch, aimed at video and data distribution over low coherence time, Doppler effect affected, frequency selective, vehicular highway channels. On-field testing outcomes obtained using such technology are also presented in detail pointing out achieved results in terms of reliable wideband communication as well as still open research and development lanes.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"146 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":"116516670","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: 1

A frame-level timing acquisition scheme of ultra-wideband signals using multi-templates 一种使用多模板的帧级超宽带信号定时采集方案

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285235

W. Xu, Jiaxiang Zhao, D. Wang

引用次数: 2

Power allocation for social benefit through price-taking behaviour on a CDMA reverse link shared by energy-constrained and energy-sufficient data terminals 在能量受限和能量充足的数据终端共享的 CDMA 反向链路上，通过价格行为进行功率分配以实现社会效益

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285243

V. Rodriguez, F. Jondral, R. Mathar

{"title":"Power allocation for social benefit through price-taking behaviour on a CDMA reverse link shared by energy-constrained and energy-sufficient data terminals","authors":"V. Rodriguez, F. Jondral, R. Mathar","doi":"10.1109/ISWCS.2009.5285243","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285243","url":null,"abstract":"We allocate power to maximise “social benefit” in the uplink of a CDMA cell populated by data terminals, each with its own data rate, channel gain, willingness to pay (wtp), and link-layer configuration, and with energy supplies that are limited for some, and inexhaustible for others. For both types, appropriate performance indices are specified. The social optimum can be achieved distributively through price-taking behaviour, if prices are based on a terminal's fraction of the total power received. For a given price, a terminal can choose its optimal power fraction without knowing the choices made by others because this fraction directly determines its signal-to-interference ratio (SIR), and hence its performance. By contrast, other schemes produce “games” in which terminals' optimal choices depend on each other. A “decoupled” solution has important technological and “marketing” advantages. The socially-optimal price is common to all terminals of a given energy class, and an energy-constrained terminal pays in proportion to the square of its power fraction.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"49 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":"129352911","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: 6

An optimal network dimensioning and initial energy assignment minimizing the monetary cost of a heterogeneous WSN 一种使异构无线传感器网络的货币成本最小化的最优网络尺寸和初始能量分配

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285351

Cüneyt Sevgi, Altan Koçyiğit

引用次数: 8

Practical source-network decoding 实用的源网络解码

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285249

G. Maierbacher, J. Barros, M. Médard

引用次数: 21