首页 > 最新文献

2013 Wireless Telecommunications Symposium (WTS)最新文献

英文 中文
A web-based simulator to train students in self-organizing wireless networks 一个基于网络的模拟器,训练学生在自组织无线网络
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566258
A. Cristóbal-Salas, Jed Kao-Tung Chang
This paper presents a software simulator to be used as a part of a didactic strategy based on project-based learning where students better understand technical details associated to self-organizing wireless devices. This simulator is implemented as a multi-agent, web-based system where each device is an autonomous agent that can be controlled by students via configuration. System simulates two types of wireless devices: self-organizing and clients. By using this simulator, students may detect, analyze and discuss the advantages of such devices while they can use it as a tool to implement new strategies for wireless device organization.
本文提出了一个软件模拟器,作为基于项目学习的教学策略的一部分,学生可以更好地理解与自组织无线设备相关的技术细节。该模拟器是一个基于web的多代理系统,其中每个设备都是一个自主代理,可以由学生通过配置来控制。系统模拟了两种类型的无线设备:自组织和客户端。通过使用该模拟器,学生可以检测、分析和讨论这些设备的优点,同时他们可以将其作为实现无线设备组织新策略的工具。
{"title":"A web-based simulator to train students in self-organizing wireless networks","authors":"A. Cristóbal-Salas, Jed Kao-Tung Chang","doi":"10.1109/WTS.2013.6566258","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566258","url":null,"abstract":"This paper presents a software simulator to be used as a part of a didactic strategy based on project-based learning where students better understand technical details associated to self-organizing wireless devices. This simulator is implemented as a multi-agent, web-based system where each device is an autonomous agent that can be controlled by students via configuration. System simulates two types of wireless devices: self-organizing and clients. By using this simulator, students may detect, analyze and discuss the advantages of such devices while they can use it as a tool to implement new strategies for wireless device organization.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116737905","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
Analytical estimation of service requests capacity in LTE-A systems with heterogeneous traffic 异构LTE-A系统业务请求容量的分析估计
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566248
E. R. Bastidas-Puga, G. Galaviz, Á. G. Andrade, D. Covarrubias
The scheduler is the entity within Long Term Evolution wireless systems responsible for the assignment of time and frequency resources to users. In this work we present an analysis to determine the scheduling Service Requests Capacity for Long Term Evolution Advanced systems, defined as the quantity of service requests the scheduler is able to dispatch in a given period of time. This methodology can be used to evaluate scheduling algorithms along with some other metrics widely employed such as system throughput, delay or fairness. Numerical results are presented for the proposed metric including upper and lower bounds considering a specific system with heterogeneous traffic in a non line of sight urban macro cellular scenario. For the case studied, results suggest that the file size has a more significant impact on the service requests capacity than the requested data rate.
调度程序是长期演进无线系统中负责向用户分配时间和频率资源的实体。在这项工作中,我们提出了一个分析,以确定调度服务请求能力的长期演进高级系统,定义为服务请求的数量调度程序能够在给定的时间内调度。该方法可用于评估调度算法以及其他一些广泛使用的指标,如系统吞吐量、延迟或公平性。在非视距城市宏观元胞场景下,给出了包含上下界的非均匀交通系统的数值结果。对于所研究的案例,结果表明文件大小对业务请求容量的影响比对请求的数据速率的影响更大。
{"title":"Analytical estimation of service requests capacity in LTE-A systems with heterogeneous traffic","authors":"E. R. Bastidas-Puga, G. Galaviz, Á. G. Andrade, D. Covarrubias","doi":"10.1109/WTS.2013.6566248","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566248","url":null,"abstract":"The scheduler is the entity within Long Term Evolution wireless systems responsible for the assignment of time and frequency resources to users. In this work we present an analysis to determine the scheduling Service Requests Capacity for Long Term Evolution Advanced systems, defined as the quantity of service requests the scheduler is able to dispatch in a given period of time. This methodology can be used to evaluate scheduling algorithms along with some other metrics widely employed such as system throughput, delay or fairness. Numerical results are presented for the proposed metric including upper and lower bounds considering a specific system with heterogeneous traffic in a non line of sight urban macro cellular scenario. For the case studied, results suggest that the file size has a more significant impact on the service requests capacity than the requested data rate.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130928036","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
Interference analysis of OFDM signals for blind timing synchronization OFDM信号盲定时同步干扰分析
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566260
H. Huh
For OFDM systems, link performance heavily depends on frequency-offset estimation. Since symbol timing must be done before other synchronization, perfect timing estimate is a prerequisite for the better frequency estimation. As to timing synchronization, minimum interference power (MIP) algorithm can be a good candidate for a non-data-aided timing recovery. In order to use MIP as a metric for timing synchronization, interference should be a function of timing errors and be easily separated from desired signals. In this paper, we propose a MIP algorithm for symbol timing where the extraction of interference components is implemented by oversampling the band-limited received signals and performing discrete Fourier transform (DFT) for the oversampled sequence.
对于OFDM系统,链路性能严重依赖于频率偏移估计。由于符号定时必须在其他同步之前完成,因此完美的定时估计是更好的频率估计的先决条件。在定时同步方面,最小干扰功率(MIP)算法可以作为非数据辅助定时恢复的一个很好的候选。为了使用MIP作为定时同步的度量,干扰应该是定时误差的函数,并且很容易从期望的信号中分离出来。在本文中,我们提出了一种用于符号时序的MIP算法,其中通过对带限接收信号进行过采样并对过采样序列进行离散傅里叶变换(DFT)来实现干扰分量的提取。
{"title":"Interference analysis of OFDM signals for blind timing synchronization","authors":"H. Huh","doi":"10.1109/WTS.2013.6566260","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566260","url":null,"abstract":"For OFDM systems, link performance heavily depends on frequency-offset estimation. Since symbol timing must be done before other synchronization, perfect timing estimate is a prerequisite for the better frequency estimation. As to timing synchronization, minimum interference power (MIP) algorithm can be a good candidate for a non-data-aided timing recovery. In order to use MIP as a metric for timing synchronization, interference should be a function of timing errors and be easily separated from desired signals. In this paper, we propose a MIP algorithm for symbol timing where the extraction of interference components is implemented by oversampling the band-limited received signals and performing discrete Fourier transform (DFT) for the oversampled sequence.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131467191","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
Tacit knowledge acquisition in virtual teams 虚拟团队中的隐性知识获取
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566228
Darryl D. Diptee, Jason Diptee
Each year more organizations shift from costly brick-and-mortar assets to low-cost cyber equivalents which enable geographically spread teamwork via Social Networking Applications (SNAs). While explicit knowledge exchange is densely represented in the literature, there seems to be a lack of sufficient research on the dynamics of tacit knowledge among virtual team members in SNAs. This research paper outlines the results of an international Global Chemical Warfare Team Collaboration (GCWTC) experiment which suggests that tacit knowledge does not flow between people as traditionally prescribed, but is rather only partly inoculated followed by spontaneous self-generation as a factor of trust levels, time exposure and personal communication and comprehension traits. This research triangulates upon a new and exciting theoretical model with which to understand tacit knowledge acquisition. An invitation is extended to utilize the results of this mixed methods study as a foundation to build and test hypotheses for future quantitative research.
每年都有更多的组织从昂贵的实体资产转向低成本的网络资产,通过社交网络应用程序(sna)实现地理上分散的团队合作。虽然显性知识交换在文献中有大量的表现,但对sna虚拟团队成员之间隐性知识的动态研究似乎缺乏足够的研究。本文概述了一项国际全球化学战团队协作(GCWTC)实验的结果,该实验表明,隐性知识并不像传统规定的那样在人与人之间流动,而是部分接种,然后自发产生,作为信任水平、时间暴露和个人沟通和理解特征的一个因素。本研究建立了一个新的、令人兴奋的理论模型,用以理解隐性知识的获取。邀请利用这种混合方法研究的结果作为基础,以建立和检验未来定量研究的假设。
{"title":"Tacit knowledge acquisition in virtual teams","authors":"Darryl D. Diptee, Jason Diptee","doi":"10.1109/WTS.2013.6566228","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566228","url":null,"abstract":"Each year more organizations shift from costly brick-and-mortar assets to low-cost cyber equivalents which enable geographically spread teamwork via Social Networking Applications (SNAs). While explicit knowledge exchange is densely represented in the literature, there seems to be a lack of sufficient research on the dynamics of tacit knowledge among virtual team members in SNAs. This research paper outlines the results of an international Global Chemical Warfare Team Collaboration (GCWTC) experiment which suggests that tacit knowledge does not flow between people as traditionally prescribed, but is rather only partly inoculated followed by spontaneous self-generation as a factor of trust levels, time exposure and personal communication and comprehension traits. This research triangulates upon a new and exciting theoretical model with which to understand tacit knowledge acquisition. An invitation is extended to utilize the results of this mixed methods study as a foundation to build and test hypotheses for future quantitative research.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127188176","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
LTE-Advanced channel coding generic procedures A high-level model to guide low-level implementations LTE-Advanced信道编码通用程序用于指导低级实现的高级模型
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566238
F. A. P. Figueiredo, K. Lenzi, J. Filho, F. Figueiredo
This paper presents a high-level functional model for the 3GPP LTE-Advanced channel coding generic procedures. Due to the complexity of modern wireless communication systems, it is fundamental to have a well-defined high-level model to guide low-level implementations, like C/C++ or HDL. Highlevel modeling not only serves the purpose of proving the correctness of a given system, but also to present measures of its optimal performance, since we are not yet restricted by any technology. The LTE-Advanced channel coding is composed by five generic procedures: CRC calculation, code block segmentation and CRC attachment, channel coding, rate matching and code block concatenation. The aggregation of these procedures creates the great majority of the downlink and uplink transport channels. In this paper, we present a very simple way of modeling the channel coding, offering a reference for future LTE channel coding developments.
本文提出了3GPP LTE-Advanced信道编码通用程序的高级功能模型。由于现代无线通信系统的复杂性,有一个定义良好的高级模型来指导低级实现(如C/ c++或HDL)是至关重要的。高级建模不仅用于证明给定系统的正确性,而且还用于提供其最佳性能的度量,因为我们还没有受到任何技术的限制。LTE-Advanced信道编码由五个通用程序组成:CRC计算、码块分割和CRC附加、信道编码、速率匹配和码块拼接。这些过程的聚合产生了绝大多数下行链路和上行链路传输通道。在本文中,我们提出了一种非常简单的信道编码建模方法,为未来LTE信道编码的发展提供参考。
{"title":"LTE-Advanced channel coding generic procedures A high-level model to guide low-level implementations","authors":"F. A. P. Figueiredo, K. Lenzi, J. Filho, F. Figueiredo","doi":"10.1109/WTS.2013.6566238","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566238","url":null,"abstract":"This paper presents a high-level functional model for the 3GPP LTE-Advanced channel coding generic procedures. Due to the complexity of modern wireless communication systems, it is fundamental to have a well-defined high-level model to guide low-level implementations, like C/C++ or HDL. Highlevel modeling not only serves the purpose of proving the correctness of a given system, but also to present measures of its optimal performance, since we are not yet restricted by any technology. The LTE-Advanced channel coding is composed by five generic procedures: CRC calculation, code block segmentation and CRC attachment, channel coding, rate matching and code block concatenation. The aggregation of these procedures creates the great majority of the downlink and uplink transport channels. In this paper, we present a very simple way of modeling the channel coding, offering a reference for future LTE channel coding developments.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131808631","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: 3
Detection of RF devices based on their unintended electromagnetic emissions using Principal Components Analysis 基于非预期电磁发射的射频设备的主成分分析检测
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566247
Shikhar P. Acharya, I. Guardiola
Radio Frequency devices produce Unintended Electromagnetic Emissions (UEEs). These emissions have been found to be unique from device to device due to small differences in the physical components that make up the device. The property of uniqueness of UEE has been used to detect and identify the device producing the emission. However, UEEs are low power signals often buried within the noise band, which makes them difficult to detect. In this paper, we present a novel approach of the application of Principal Component Analysis (PCA) in detecting UEEs. UEE samples are collected from two RF devices at three different distances of 3 feet, 6 feet and 10 feet using spectrum analyzer. Our approach can detect if these low power signals are UEEs or noise. A decision table based on PCA parameters to detect UEE signals is also proposed.
射频设备产生意外电磁发射(uee)。由于构成器件的物理组件的微小差异,这些发射已被发现在器件之间是独特的。利用UEE的唯一性来检测和识别产生UEE的器件。然而,uee是低功率信号,通常埋在噪声带中,这使得它们很难被检测到。在本文中,我们提出了一种应用主成分分析(PCA)检测uee的新方法。使用频谱分析仪从三个不同距离(3英尺、6英尺和10英尺)的两个射频设备收集UEE样本。我们的方法可以检测这些低功率信号是uee还是噪声。提出了一种基于主成分分析参数的决策表来检测UEE信号。
{"title":"Detection of RF devices based on their unintended electromagnetic emissions using Principal Components Analysis","authors":"Shikhar P. Acharya, I. Guardiola","doi":"10.1109/WTS.2013.6566247","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566247","url":null,"abstract":"Radio Frequency devices produce Unintended Electromagnetic Emissions (UEEs). These emissions have been found to be unique from device to device due to small differences in the physical components that make up the device. The property of uniqueness of UEE has been used to detect and identify the device producing the emission. However, UEEs are low power signals often buried within the noise band, which makes them difficult to detect. In this paper, we present a novel approach of the application of Principal Component Analysis (PCA) in detecting UEEs. UEE samples are collected from two RF devices at three different distances of 3 feet, 6 feet and 10 feet using spectrum analyzer. Our approach can detect if these low power signals are UEEs or noise. A decision table based on PCA parameters to detect UEE signals is also proposed.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130447210","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
The approach of the New Downlink Control Information Design for Transmission Mode 10 传输模式下的新型下行控制信息设计方法
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566236
Jean-Baptiste Yamindi, Hong Ji, Muqing Wu
In this paper, we proposed the addition of 2 new bits in Downlink Control Information (DCI) format 2D used for Transmission Mode 10 in 3GPP LTE-A specification. This New Downlink Control Information Design with two new bits extends the Downlink Demodulation Reference Signal (DMRS) so that the Physical Downlink Shared Channel (PDSCH) shall be processed and mapped to Resource Elements (RE) mapping and Quasi-Co-Location (QCL) parameter for a User Equipment UE. The new design was analyzed for Multi-user MIMO (MU-MIMO) and Coordinated Multi-point Transmission (CoMP) techniques. The analysis and simulation results indicate that DCI format 2D with the additional bits used with the CIF field are beneficial for both MU-MIMO and CoMP.
在本文中,我们建议在下行链路控制信息(DCI)格式2D中增加2个新比特,用于3GPP LTE-A规范中的传输模式10。这种具有两个新位的新的下行链路控制信息设计扩展了下行链路解调参考信号(DMRS),以便对物理下行链路共享信道(PDSCH)进行处理并映射到用户设备UE的资源元素(RE)映射和准协同定位(QCL)参数。分析了多用户MIMO (MU-MIMO)和多点协调传输(CoMP)技术的新设计。分析和仿真结果表明,带有CIF字段的DCI格式2D对MU-MIMO和CoMP都是有益的。
{"title":"The approach of the New Downlink Control Information Design for Transmission Mode 10","authors":"Jean-Baptiste Yamindi, Hong Ji, Muqing Wu","doi":"10.1109/WTS.2013.6566236","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566236","url":null,"abstract":"In this paper, we proposed the addition of 2 new bits in Downlink Control Information (DCI) format 2D used for Transmission Mode 10 in 3GPP LTE-A specification. This New Downlink Control Information Design with two new bits extends the Downlink Demodulation Reference Signal (DMRS) so that the Physical Downlink Shared Channel (PDSCH) shall be processed and mapped to Resource Elements (RE) mapping and Quasi-Co-Location (QCL) parameter for a User Equipment UE. The new design was analyzed for Multi-user MIMO (MU-MIMO) and Coordinated Multi-point Transmission (CoMP) techniques. The analysis and simulation results indicate that DCI format 2D with the additional bits used with the CIF field are beneficial for both MU-MIMO and CoMP.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114671545","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
Unequal error protection for radiography image transmission using protograph double LDPC codes 用原形双LDPC码的射线照相图像传输的不等错误保护
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566235
Liangliang Xu, Huihui Wu, Jiguang He, Lin Wang
In this paper, a novel unequal error protection (UEP) scheme, which is constructed from protograph double low-density parity-check (PD-LDPC) codes, and tailored for medical images is proposed to minimize the end to end image distortion over additive white Gaussian noise (AWGN) channel. The UEP scheme is carried out by adopting different coding strategies in terms of the different significant levels and different entropies of image data streams from discrete cosine transform (DCT). A typical radiography image and other two gray-scale images are exploited in the simulation. The experimental results show that the proposed scheme can evidently increase the peak signal to noise ratio (PSNR) value of the received images and reconstruct the transmitted images with good quality even at a very low signal-to-noise ratio (SNR). In particular, the proposed scheme outperforms the other UEP schemes based on regular D-LDPC codes and turbo codes by up to 0.5 and 2.5 dB in the SNR when the PSNR of the reconstructed images reach the expected upper bound, respectively.
本文提出了一种基于原始图像双低密度奇偶校验码(PD-LDPC)的医学图像不平等错误保护(UEP)方案,以最大限度地降低加性高斯白噪声(AWGN)信道上的端到端图像失真。UEP方案是根据离散余弦变换(DCT)图像数据流的不同显著水平和不同熵采用不同的编码策略来实现的。在仿真中利用了一幅典型的射线图像和另外两幅灰度图像。实验结果表明,该方案可以明显提高接收图像的峰值信噪比,即使在很低的信噪比(SNR)下也能以较好的质量重建传输图像。特别是,当重构图像的PSNR达到期望上界时,该方案的信噪比分别比基于常规D-LDPC码和turbo码的其他UEP方案高出0.5和2.5 dB。
{"title":"Unequal error protection for radiography image transmission using protograph double LDPC codes","authors":"Liangliang Xu, Huihui Wu, Jiguang He, Lin Wang","doi":"10.1109/WTS.2013.6566235","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566235","url":null,"abstract":"In this paper, a novel unequal error protection (UEP) scheme, which is constructed from protograph double low-density parity-check (PD-LDPC) codes, and tailored for medical images is proposed to minimize the end to end image distortion over additive white Gaussian noise (AWGN) channel. The UEP scheme is carried out by adopting different coding strategies in terms of the different significant levels and different entropies of image data streams from discrete cosine transform (DCT). A typical radiography image and other two gray-scale images are exploited in the simulation. The experimental results show that the proposed scheme can evidently increase the peak signal to noise ratio (PSNR) value of the received images and reconstruct the transmitted images with good quality even at a very low signal-to-noise ratio (SNR). In particular, the proposed scheme outperforms the other UEP schemes based on regular D-LDPC codes and turbo codes by up to 0.5 and 2.5 dB in the SNR when the PSNR of the reconstructed images reach the expected upper bound, respectively.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122184830","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: 11
An effective semi-static interference coordination scheme for wireless cellular systems 一种有效的无线蜂窝系统半静态干扰协调方案
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566251
Ruya Yan, Guomei Zhang, Bin Li, Pinyi Ren, Qinghe Du
In recent years, interference management designing has been studied widely for high data-rate wireless systems in next generation cellular systems such as 3GPP long term evolution (LTE), LTE-advanced, and worldwide interoperability for microwave access (WiMAX), where highly dense reuse of spectrum is required. Interference management includes receiver processing, interference randomization by frequency hopping, and interference coordination through resource usage restrictions imposed by frequency and power planning. In this paper, we present a novel semi-static interference coordination scheme for cellular systems to improve the cell-edge performance with little penalty to the overall system throughput. The proposed scheme consists of two stages, semi-static distributed resource pre-allocation and power control. Here, power control with a fixed adjusting factor and an adaptive power control algorithm are both considered. Simulation results show that the proposed scheme outperforms a number of reference conventional interference coordination schemes in terms of cell-edge and overall system throughput especially in high-load scenarios.
近年来,高数据速率无线系统的干扰管理设计在下一代蜂窝系统中得到了广泛的研究,如3GPP长期演进(LTE)、LTE-advanced和全球微波接入互操作性(WiMAX),这些系统需要高度密集的频谱复用。干扰管理包括接收机处理、通过跳频进行干扰随机化以及通过频率和功率规划施加的资源使用限制进行干扰协调。在本文中,我们提出了一种新的蜂窝系统半静态干扰协调方案,以提高蜂窝边缘性能,而不影响系统的整体吞吐量。该方案分为半静态分布式资源预分配和功率控制两个阶段。本文考虑了固定调节因子的功率控制和自适应功率控制算法。仿真结果表明,在高负载情况下,该方案在蜂窝边缘和系统整体吞吐量方面优于许多参考的传统干扰协调方案。
{"title":"An effective semi-static interference coordination scheme for wireless cellular systems","authors":"Ruya Yan, Guomei Zhang, Bin Li, Pinyi Ren, Qinghe Du","doi":"10.1109/WTS.2013.6566251","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566251","url":null,"abstract":"In recent years, interference management designing has been studied widely for high data-rate wireless systems in next generation cellular systems such as 3GPP long term evolution (LTE), LTE-advanced, and worldwide interoperability for microwave access (WiMAX), where highly dense reuse of spectrum is required. Interference management includes receiver processing, interference randomization by frequency hopping, and interference coordination through resource usage restrictions imposed by frequency and power planning. In this paper, we present a novel semi-static interference coordination scheme for cellular systems to improve the cell-edge performance with little penalty to the overall system throughput. The proposed scheme consists of two stages, semi-static distributed resource pre-allocation and power control. Here, power control with a fixed adjusting factor and an adaptive power control algorithm are both considered. Simulation results show that the proposed scheme outperforms a number of reference conventional interference coordination schemes in terms of cell-edge and overall system throughput especially in high-load scenarios.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128967124","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
Using wireless telecommunication technology to promote tele-audiology 利用无线通信技术促进远程听力学
Pub Date : 2013-04-17 DOI: 10.1109/WTS.2013.6566232
Daoyuan Yao, G. Givens, Jianchu Yao
The purpose of this research is to investigate how wireless telecommunication technologies, more specifically Bluetooth, can be utilized in a tele-audiology assessment system to promote remote hearing diagnosis in the following aspects: supporting multiple hearing test modalities (e.g., pure-tone audiogram and speech test); providing a convenient communication means among three-party (i.e., audiologist, assistant and patient) involved in a typical test session with fairly limited software and hardware resources; and improving its reliability when unexpected scenarios occur during test sessions. This enhanced tele-audiology assessment system is composed of a web server, an integrated console device, and a Bluetooth-enabled audiometer. The console device is the portal to the users, which exchanges numeric commands and responses of various data types between the audiologist and patient, transmits audio and video data among the three parties, and introduces a reliability mechanism. Test results show that this tele-audiology assessment system can satisfy the requirement of clinical diagnostic hearing assessment.
本研究旨在探讨无线通信技术,特别是蓝牙技术如何应用于远程听力学评估系统,在以下方面促进远程听力诊断:支持多种听力测试方式(如纯音听力图和语音测试);在软件和硬件资源相当有限的情况下,为参与典型测试的三方(即听力学家、助手和患者)提供方便的沟通手段;并在测试过程中出现意外情况时提高其可靠性。这种增强的远程听力学评估系统由web服务器、集成控制台设备和蓝牙听力学计组成。控制台设备是用户的门户,在听力学家和患者之间交换数字命令和各种数据类型的响应,在三方之间传输音频和视频数据,并引入可靠性机制。试验结果表明,该远程听力学评估系统能够满足临床诊断性听力评估的要求。
{"title":"Using wireless telecommunication technology to promote tele-audiology","authors":"Daoyuan Yao, G. Givens, Jianchu Yao","doi":"10.1109/WTS.2013.6566232","DOIUrl":"https://doi.org/10.1109/WTS.2013.6566232","url":null,"abstract":"The purpose of this research is to investigate how wireless telecommunication technologies, more specifically Bluetooth, can be utilized in a tele-audiology assessment system to promote remote hearing diagnosis in the following aspects: supporting multiple hearing test modalities (e.g., pure-tone audiogram and speech test); providing a convenient communication means among three-party (i.e., audiologist, assistant and patient) involved in a typical test session with fairly limited software and hardware resources; and improving its reliability when unexpected scenarios occur during test sessions. This enhanced tele-audiology assessment system is composed of a web server, an integrated console device, and a Bluetooth-enabled audiometer. The console device is the portal to the users, which exchanges numeric commands and responses of various data types between the audiologist and patient, transmits audio and video data among the three parties, and introduces a reliability mechanism. Test results show that this tele-audiology assessment system can satisfy the requirement of clinical diagnostic hearing assessment.","PeriodicalId":441229,"journal":{"name":"2013 Wireless Telecommunications Symposium (WTS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127578934","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
期刊
2013 Wireless Telecommunications Symposium (WTS)
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1