首页 > 最新文献

2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)最新文献

英文 中文
An improved scheme for large scale complex field network coding based on user clustering and relay selection strategy in wireless cooperative communication 基于无线协作通信中用户聚类和中继选择策略的大规模复杂现场网络编码改进方案
Yuwen Huang, Zhanji Wu, Chengxin Jiang, Kun Lu
Complex field network coding can earn larger diversity gain, better system reliability and higher network throughput in wireless communication with relay cooperative. An improved complex filed network coding scheme for large scale density network with user clustering and relay selection strategy will be proposed in this paper. The multiuser detector we employ is not based on maximum likelihood algorithm, but based on complex filed belief propagation algorithm improved from belief propagation decode algorithm of low density parity check code. As the same time, network decoding and channel decoding are combined together to form a joint network channel iterative decoder, in which the extrinsic information derive from network decode and that derive from channel decode can work well for each other. Numerical results are given to illustrate that our proposed scheme can provide better reliability, larger network diversity gain and higher throughput, more importantly, it can be well applied to large scale dense network when compared with traditional schemes.
在中继协同无线通信中,复杂的现场网络编码可以获得更大的分集增益、更好的系统可靠性和更高的网络吞吐量。提出了一种基于用户聚类和中继选择策略的大规模密度网络复杂域网络编码改进方案。我们采用的多用户检测器不是基于极大似然算法,而是基于低密度奇偶校验码的信念传播译码算法改进的复域信念传播算法。同时,将网络译码与信道译码相结合,形成联合的网络信道迭代译码器,使得网络译码与信道译码的外在信息能够很好地相互配合。数值结果表明,与传统方案相比,该方案具有更好的可靠性、更大的网络分集增益和更高的吞吐量,更重要的是,它可以很好地应用于大规模密集网络。
{"title":"An improved scheme for large scale complex field network coding based on user clustering and relay selection strategy in wireless cooperative communication","authors":"Yuwen Huang, Zhanji Wu, Chengxin Jiang, Kun Lu","doi":"10.1109/ICCSN.2016.7587210","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7587210","url":null,"abstract":"Complex field network coding can earn larger diversity gain, better system reliability and higher network throughput in wireless communication with relay cooperative. An improved complex filed network coding scheme for large scale density network with user clustering and relay selection strategy will be proposed in this paper. The multiuser detector we employ is not based on maximum likelihood algorithm, but based on complex filed belief propagation algorithm improved from belief propagation decode algorithm of low density parity check code. As the same time, network decoding and channel decoding are combined together to form a joint network channel iterative decoder, in which the extrinsic information derive from network decode and that derive from channel decode can work well for each other. Numerical results are given to illustrate that our proposed scheme can provide better reliability, larger network diversity gain and higher throughput, more importantly, it can be well applied to large scale dense network when compared with traditional schemes.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133758649","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
Research on compressed sensing of KL domain with limited feedback in MIMO-OFDM system MIMO-OFDM系统中有限反馈KL域压缩感知研究
Hongliang Fu, Lianf Chao
In order to solve the problem of feedback link overhead in MIMO-OFDM system, and improve the transmission efficiency, a limited feedback method based on KL domain is proposed in this paper. In this method, the state information which is obtained from the channel estimation performed in KL domain sparse at the receiving end. Thereby a small amount of linear measurements are obtained which represents the total channel state information, Then these measurements are fed back to the transmitting end. In the transmitter, the channel state information is reconstructed through orthogonal matching pursuit algorithm. The simulation results show that the proposed limited feedback based on KL (Karhuner-Loeve) domain method can achieve full channel state feedback effect and decreases the overhead in the feedback link.
为了解决MIMO-OFDM系统中的反馈链路开销问题,提高传输效率,提出了一种基于KL域的有限反馈方法。该方法将接收端在KL域进行信道估计得到的状态信息进行稀疏处理。从而得到代表信道总状态信息的少量线性测量值,然后将这些测量值反馈到发送端。在发射机中,通过正交匹配追踪算法重构信道状态信息。仿真结果表明,所提出的基于KL (Karhuner-Loeve)域方法的有限反馈能够达到全信道状态反馈效果,降低了反馈环节的开销。
{"title":"Research on compressed sensing of KL domain with limited feedback in MIMO-OFDM system","authors":"Hongliang Fu, Lianf Chao","doi":"10.1109/ICCSN.2016.7586637","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586637","url":null,"abstract":"In order to solve the problem of feedback link overhead in MIMO-OFDM system, and improve the transmission efficiency, a limited feedback method based on KL domain is proposed in this paper. In this method, the state information which is obtained from the channel estimation performed in KL domain sparse at the receiving end. Thereby a small amount of linear measurements are obtained which represents the total channel state information, Then these measurements are fed back to the transmitting end. In the transmitter, the channel state information is reconstructed through orthogonal matching pursuit algorithm. The simulation results show that the proposed limited feedback based on KL (Karhuner-Loeve) domain method can achieve full channel state feedback effect and decreases the overhead in the feedback link.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129956024","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
Design and implementation of multicast routing system over SDN and sFlow 基于SDN和sFlow的组播路由系统的设计与实现
Lei Huang, Xiaoli Zhi, Q. Gao, Samina Kausar, Shengan Zheng
It is challenging to achieve network load balancing, simultaneously meeting the quality of service (QoS) demands of bandwidth and delays. In this paper we have designed and implemented a multicast routing system over Software Defined Networking (SDN) and sFlow. The system has been developed on the top of RYU controller. Our main contributions are: (1) compatibility of our system with traditional multicast applications which are based on the Internet Group Management Protocol (IGMP) v2 and multicast address; (2) choosing the optimum paths for multicast applications on the basis of currently available network bandwidth which is calculated accurately by sFlow; (3) reduction in unnecessary network traffic effectively and load balancing, thereby reducing the packet loss rate and delay in the multicast.
如何实现网络负载均衡,同时满足带宽和时延对服务质量(QoS)的要求是一个挑战。本文设计并实现了一个基于软件定义网络(SDN)和sFlow的组播路由系统。该系统是在RYU控制器的基础上开发的。我们的主要贡献有:(1)我们的系统兼容基于Internet Group Management Protocol (IGMP) v2和多播地址的传统多播应用;(2)根据sFlow精确计算的当前可用网络带宽,为组播应用选择最优路径;(3)有效减少不必要的网络流量并实现负载均衡,从而降低组播中的丢包率和时延。
{"title":"Design and implementation of multicast routing system over SDN and sFlow","authors":"Lei Huang, Xiaoli Zhi, Q. Gao, Samina Kausar, Shengan Zheng","doi":"10.1109/ICCSN.2016.7586578","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586578","url":null,"abstract":"It is challenging to achieve network load balancing, simultaneously meeting the quality of service (QoS) demands of bandwidth and delays. In this paper we have designed and implemented a multicast routing system over Software Defined Networking (SDN) and sFlow. The system has been developed on the top of RYU controller. Our main contributions are: (1) compatibility of our system with traditional multicast applications which are based on the Internet Group Management Protocol (IGMP) v2 and multicast address; (2) choosing the optimum paths for multicast applications on the basis of currently available network bandwidth which is calculated accurately by sFlow; (3) reduction in unnecessary network traffic effectively and load balancing, thereby reducing the packet loss rate and delay in the multicast.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125363757","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: 13
Comparative analysis of list scheduling algorithms on homogeneous multi-processors 同构多处理器上列表调度算法的比较分析
Jian Wang, Xinke Lv, Xiao Chen
Task Scheduling for parallel computing is a process to map the application to the multi-processors while minimize the execution time. Task scheduling is classified into static scheduling and dynamic scheduling. List scheduling is a class of static heuristic based scheduling algorithms with low complexity and good performance. Based on the principle of list scheduling algorithm with limited numbers of homogeneous multi-processors, this study analyzes the complexity and property of six typical kinds of list scheduling algorithms including HLFET, ISH, MCP, ETF, DLS and CPND. By using three types of task graphs including peer set graphs, traced graphs and random graphs, the schedule lengths of the six list scheduling algorithms are compared and analyzed. It can be concluded that the algorithms based on the critical path nodes (such as MCP, CPND) are generally better than other algorithms. The algorithms using dynamic properties (such as DLS, ETF) perform better than most of the algorithms adopting static properties.
并行计算的任务调度是将应用程序映射到多处理器,同时最小化执行时间的过程。任务调度分为静态调度和动态调度。列表调度是一类基于静态启发式的调度算法,复杂度低,性能好。基于同构多处理器数量有限的列表调度算法原理,分析了HLFET、ISH、MCP、ETF、DLS和CPND等6种典型列表调度算法的复杂度和特性。利用同伴集图、跟踪图和随机图三种任务图,对六种列表调度算法的调度长度进行了比较和分析。可以得出结论,基于关键路径节点的算法(如MCP、CPND)一般优于其他算法。使用动态属性的算法(如DLS、ETF)比大多数采用静态属性的算法性能更好。
{"title":"Comparative analysis of list scheduling algorithms on homogeneous multi-processors","authors":"Jian Wang, Xinke Lv, Xiao Chen","doi":"10.1109/ICCSN.2016.7586616","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586616","url":null,"abstract":"Task Scheduling for parallel computing is a process to map the application to the multi-processors while minimize the execution time. Task scheduling is classified into static scheduling and dynamic scheduling. List scheduling is a class of static heuristic based scheduling algorithms with low complexity and good performance. Based on the principle of list scheduling algorithm with limited numbers of homogeneous multi-processors, this study analyzes the complexity and property of six typical kinds of list scheduling algorithms including HLFET, ISH, MCP, ETF, DLS and CPND. By using three types of task graphs including peer set graphs, traced graphs and random graphs, the schedule lengths of the six list scheduling algorithms are compared and analyzed. It can be concluded that the algorithms based on the critical path nodes (such as MCP, CPND) are generally better than other algorithms. The algorithms using dynamic properties (such as DLS, ETF) perform better than most of the algorithms adopting static properties.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127838079","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
Multi-tone interference suppression in DSSS system based on the optimal frequency shift of undecimated wavelet packets 基于无损小波包最优频移的DSSS系统多音干扰抑制
Lan Wang, Yuhong Yang, Pengxu Li, Liangshan Li
A new algorithm for narrowband interference suppression in Direct Sequence Spread Spectrum (DSSS) system is presented. The algorithm combines the optimum frequency shift and the Undecimated Wavelet Packet Transform (UWPT) to locate the interference energy in as little sub-band as possible. In addition, the adaptive algorithm is used to reduce the harm to the signal caused by eliminating the disturbed sub-band. Simulation results show that the proposed algorithm has a better performance than the traditional Undecimated Wavelet Packet Transform with frequency shift (SUWPT) algorithm in the suppression of the Multi-Tone Interference (MTI).
提出了一种新的直接序列扩频(DSSS)系统窄带干扰抑制算法。该算法结合最优频移和未消差小波包变换(UWPT),将干扰能量定位在尽可能小的子频带内。此外,采用自适应算法消除干扰子带对信号的危害。仿真结果表明,该算法在抑制多音干扰(MTI)方面具有比传统的未消差移频小波包变换(SUWPT)算法更好的性能。
{"title":"Multi-tone interference suppression in DSSS system based on the optimal frequency shift of undecimated wavelet packets","authors":"Lan Wang, Yuhong Yang, Pengxu Li, Liangshan Li","doi":"10.1109/ICCSN.2016.7586673","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586673","url":null,"abstract":"A new algorithm for narrowband interference suppression in Direct Sequence Spread Spectrum (DSSS) system is presented. The algorithm combines the optimum frequency shift and the Undecimated Wavelet Packet Transform (UWPT) to locate the interference energy in as little sub-band as possible. In addition, the adaptive algorithm is used to reduce the harm to the signal caused by eliminating the disturbed sub-band. Simulation results show that the proposed algorithm has a better performance than the traditional Undecimated Wavelet Packet Transform with frequency shift (SUWPT) algorithm in the suppression of the Multi-Tone Interference (MTI).","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130116251","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
Efficient moving object segmentation algorithm based on the improvement of generalized geodesic active contour model 基于改进广义测地线活动轮廓模型的高效运动目标分割算法
Ying Chen, Qiuhao Yu
The task of moving object segmentation is to partition an object into non-overlapping regions based on intensity or texture information. However, the conventional segmentation methods suffer from false object segmentation in complex backgrounds and slow convergence. In this paper, we propose an efficient segmentation algorithm for moving object with complicated structures in real video environment. Our novel approach, which integrates an adaptive single Gaussian model (SGM) with a generalized geodesic active contour (GGAC) model, is put forward to detect and segment moving objects in dynamic backgrounds. The proposed algorithm is implemented by level set method to reduce the expensive computational cost of re-initialization of the traditional level set function. By utilizing both spatial and temporal information, this integrated method is robust to complex environments. Experimental results demonstrate desirable segmentation improvement over widely used segmentation algorithms in terms of efficiency and accuracy.
运动目标分割的任务是根据物体的强度或纹理信息,将物体分割成不重叠的区域。然而,传统的分割方法在复杂背景下存在目标分割错误和收敛速度慢的问题。本文针对真实视频环境中具有复杂结构的运动目标,提出了一种高效的分割算法。该方法将自适应单高斯模型(SGM)与广义测地线活动轮廓(GGAC)模型相结合,实现了动态背景下运动目标的检测和分割。该算法采用水平集方法实现,降低了传统水平集函数重新初始化的计算成本。该方法综合利用了时空信息,对复杂环境具有较强的鲁棒性。实验结果表明,在分割效率和准确性方面,该算法比目前广泛使用的分割算法有了较大的提高。
{"title":"Efficient moving object segmentation algorithm based on the improvement of generalized geodesic active contour model","authors":"Ying Chen, Qiuhao Yu","doi":"10.1109/ICCSN.2016.7586600","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586600","url":null,"abstract":"The task of moving object segmentation is to partition an object into non-overlapping regions based on intensity or texture information. However, the conventional segmentation methods suffer from false object segmentation in complex backgrounds and slow convergence. In this paper, we propose an efficient segmentation algorithm for moving object with complicated structures in real video environment. Our novel approach, which integrates an adaptive single Gaussian model (SGM) with a generalized geodesic active contour (GGAC) model, is put forward to detect and segment moving objects in dynamic backgrounds. The proposed algorithm is implemented by level set method to reduce the expensive computational cost of re-initialization of the traditional level set function. By utilizing both spatial and temporal information, this integrated method is robust to complex environments. Experimental results demonstrate desirable segmentation improvement over widely used segmentation algorithms in terms of efficiency and accuracy.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129118972","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
Design of super regenerative on-off keying receiver for 5.8GHz ISM band short range applications 5.8GHz ISM波段短距离超再生开关键控接收机设计
Changhsi Wu, Jianchang Zhou, B. Chen
This paper presents a new architecture of super regenerative On-Off keying receiver (SROOK RX) applying to the 5.8GHz Industrial Scientific Medical (ISM) band in TSMC 0.18 μm process. The proposed SROOK Rx uses a quenched oscillator to reduce the required gain of Low Noise Amplifier (LNA) and can achieve low power consumption. The technology of pulse width demodulator employs the Pulse-Width Expander (PWE) to convert the pulse into digitally binary level and achieves fine resolution, which allows the SROOK Rx to support OOK demodulation. To improve the sensitivity and reduce demodulation difficulty, a high-speed comparator is added between the Envelope Detector (ED) and PWE. From simulation results, the whole receiver consumes 7mW from 0.6V/1.2V supply voltages and achieves data rate of 6 Mbps and sensitivity of -115dBm (hence energy efficiency of 1.17nJ/bit). The core area is 1.2×0.8 mm2.
提出了一种适用于TSMC 0.18 μm工艺的5.8GHz工业科学医疗(ISM)频段的超再生开关键控接收机(SROOK RX)新架构。提出的SROOK Rx采用淬火振荡器,降低了低噪声放大器(LNA)所需的增益,实现了低功耗。脉宽解调技术采用脉冲宽度扩展器(PWE)将脉冲转换为数字二进制电平,实现了较好的分辨率,使SROOK Rx能够支持OOK解调。为了提高灵敏度和降低解调难度,在包络检测器(ED)和PWE之间增加了一个高速比较器。从仿真结果来看,整个接收机在0.6V/1.2V电源电压下消耗7mW,数据速率为6mbps,灵敏度为-115dBm(能效为1.17nJ/bit)。核心区域面积为1.2×0.8 mm2。
{"title":"Design of super regenerative on-off keying receiver for 5.8GHz ISM band short range applications","authors":"Changhsi Wu, Jianchang Zhou, B. Chen","doi":"10.1109/ICCSN.2016.7586676","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586676","url":null,"abstract":"This paper presents a new architecture of super regenerative On-Off keying receiver (SROOK RX) applying to the 5.8GHz Industrial Scientific Medical (ISM) band in TSMC 0.18 μm process. The proposed SROOK Rx uses a quenched oscillator to reduce the required gain of Low Noise Amplifier (LNA) and can achieve low power consumption. The technology of pulse width demodulator employs the Pulse-Width Expander (PWE) to convert the pulse into digitally binary level and achieves fine resolution, which allows the SROOK Rx to support OOK demodulation. To improve the sensitivity and reduce demodulation difficulty, a high-speed comparator is added between the Envelope Detector (ED) and PWE. From simulation results, the whole receiver consumes 7mW from 0.6V/1.2V supply voltages and achieves data rate of 6 Mbps and sensitivity of -115dBm (hence energy efficiency of 1.17nJ/bit). The core area is 1.2×0.8 mm2.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122873708","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
Information influence measurement based on user quality and information attribute in microblogging 基于微博用户质量和信息属性的信息影响力度量
Miao Yu, Wu Yang, Wei Wang, G. Shen
In microblogging, information influence is very hard to be measured. Because there are a lot of spam messages, and these messages were retweeted and commented by a lot of spam users in microblogging. Early methods for a message influence measurement mainly use message retweet and comment times. But they don't consider the quality of user, who takes part in the information diffusion. In this paper, we propose a novel measurement method based on user quality and information attribute. Experimental results show that our method can measure the influence more accurately and reduce the spam message influence in the dataset more effectively.
在微博中,信息影响力是很难衡量的。因为有很多垃圾信息,这些信息在微博上被很多垃圾用户转发和评论。早期的消息影响度量方法主要使用消息转发和评论次数。但是他们没有考虑到参与信息传播的用户的素质。本文提出了一种基于用户质量和信息属性的度量方法。实验结果表明,该方法可以更准确地测量影响,更有效地降低垃圾邮件对数据集的影响。
{"title":"Information influence measurement based on user quality and information attribute in microblogging","authors":"Miao Yu, Wu Yang, Wei Wang, G. Shen","doi":"10.1109/ICCSN.2016.7586594","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586594","url":null,"abstract":"In microblogging, information influence is very hard to be measured. Because there are a lot of spam messages, and these messages were retweeted and commented by a lot of spam users in microblogging. Early methods for a message influence measurement mainly use message retweet and comment times. But they don't consider the quality of user, who takes part in the information diffusion. In this paper, we propose a novel measurement method based on user quality and information attribute. Experimental results show that our method can measure the influence more accurately and reduce the spam message influence in the dataset more effectively.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129045208","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
Research and implementation of the digital intermediate frequency in LTE superheterodyne transmitter LTE超外差发射机中数字中频的研究与实现
Zhang Yuan, Yuan Xingmeng, Qin Jian, Xia Lei, Chen Chao, Bao Minghui
Digital IF (Intermediate Frequency) is an indispensable key technology in modern communication, among which digital up converter (DUC) and digital down converter (DDC) are important parts between baseband and IF. In this paper, we give a general method and solution of designing digital IF to meet the demands of practical application. Firstly, we analyze the theories and technologies of digital IF including filter bank and DUC. Secondly, we set about analyzing how to design filter bank in key part and implement a superheterodyne. Finally, we put forward a specific design plan of DUC and develop a digital IF suitable for TDD-LTE (Time Division Long Term Evolution) system. The results of simulation show that our design method of DUC can satisfy the requirements of relevant indicators. It has been implemented on FPGA platform in a practical LTE based transmitter.
数字中频是现代通信中不可缺少的关键技术,其中数字上变频器(DUC)和数字下变频器(DDC)是连接基带和中频的重要组成部分。本文给出了满足实际应用需要的数字中频设计的一般方法和解决方案。首先,我们分析了数字中频的理论和技术,包括滤波器组和DUC。其次,对关键部分滤波器组的设计和超外差的实现进行了分析。最后,我们提出了DUC的具体设计方案,并开发了一种适合TDD-LTE(时分长期演进)系统的数字中频。仿真结果表明,我们的设计方法能够满足相关指标的要求。该算法已在FPGA平台上实现,并应用于实际的LTE发射机中。
{"title":"Research and implementation of the digital intermediate frequency in LTE superheterodyne transmitter","authors":"Zhang Yuan, Yuan Xingmeng, Qin Jian, Xia Lei, Chen Chao, Bao Minghui","doi":"10.1109/ICCSN.2016.7586666","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586666","url":null,"abstract":"Digital IF (Intermediate Frequency) is an indispensable key technology in modern communication, among which digital up converter (DUC) and digital down converter (DDC) are important parts between baseband and IF. In this paper, we give a general method and solution of designing digital IF to meet the demands of practical application. Firstly, we analyze the theories and technologies of digital IF including filter bank and DUC. Secondly, we set about analyzing how to design filter bank in key part and implement a superheterodyne. Finally, we put forward a specific design plan of DUC and develop a digital IF suitable for TDD-LTE (Time Division Long Term Evolution) system. The results of simulation show that our design method of DUC can satisfy the requirements of relevant indicators. It has been implemented on FPGA platform in a practical LTE based transmitter.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128900610","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
Joint resource allocation and traffic management for cloud video distribution over software-defined networks 软件定义网络上云视频分发的联合资源分配和流量管理
Zhenghuan Zhang, Xiaofeng Jiang, H. Xi
The rapid progress of cloud technology has attracted a growing number of video providers to deploy their streaming services onto multiple distributed datacenters for more cost-effective performance. The emerging Software-Defined Networking (SDN) technology overcomes the limitation of the existing network and provides a promising solution to manage the underlying network. In this paper, we introduce an SDN-enabled cloud video distribution architecture and propose a joint resource allocation and traffic management mechanism to improve user experience and reduce the system operational cost. We use a delay utility function to represent user experience and formulate the joint optimization problem as a convex optimization problem. We conduct simulations to evaluate the performance of our algorithm and the results show that our strategy can effectively cut down the total cost and guarantee user experience.
云技术的快速发展吸引了越来越多的视频提供商将他们的流媒体服务部署到多个分布式数据中心,以获得更经济高效的性能。新兴的软件定义网络(SDN)技术克服了现有网络的局限性,为底层网络的管理提供了一种很有前景的解决方案。本文介绍了一种基于sdn的云视频分发架构,并提出了一种联合资源分配和流量管理机制,以提高用户体验,降低系统运营成本。我们使用延迟效用函数来表示用户体验,并将联合优化问题表述为凸优化问题。我们通过仿真来评估算法的性能,结果表明我们的策略可以有效地降低总成本并保证用户体验。
{"title":"Joint resource allocation and traffic management for cloud video distribution over software-defined networks","authors":"Zhenghuan Zhang, Xiaofeng Jiang, H. Xi","doi":"10.1109/ICCSN.2016.7586692","DOIUrl":"https://doi.org/10.1109/ICCSN.2016.7586692","url":null,"abstract":"The rapid progress of cloud technology has attracted a growing number of video providers to deploy their streaming services onto multiple distributed datacenters for more cost-effective performance. The emerging Software-Defined Networking (SDN) technology overcomes the limitation of the existing network and provides a promising solution to manage the underlying network. In this paper, we introduce an SDN-enabled cloud video distribution architecture and propose a joint resource allocation and traffic management mechanism to improve user experience and reduce the system operational cost. We use a delay utility function to represent user experience and formulate the joint optimization problem as a convex optimization problem. We conduct simulations to evaluate the performance of our algorithm and the results show that our strategy can effectively cut down the total cost and guarantee user experience.","PeriodicalId":158877,"journal":{"name":"2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115483003","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
期刊
2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)
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