Third International Conference on Communications and Networking最新文献_第2页

Matching Pursuit versus threshold-based approach for channel estimation in OFDM systems OFDM系统中信道估计的匹配跟踪与基于阈值的方法

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217738

Zakia Jellali, L. N. Atallah

引用次数: 1

Evaluation and comparison of resource allocation strategies for new streaming services in wireless cellular networks 无线蜂窝网络中新型流媒体服务资源分配策略的评价与比较

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217734

M. Karray, Yasir Khan

{"title":"Evaluation and comparison of resource allocation strategies for new streaming services in wireless cellular networks","authors":"M. Karray, Yasir Khan","doi":"10.1109/ComNet.2012.6217734","DOIUrl":"https://doi.org/10.1109/ComNet.2012.6217734","url":null,"abstract":"Since a long time wireless networks have been offering two types of services: variable bit-rate such as mail and constant bit-rate such as voice. Recently they also offer service for streaming calls such as mobile television. The objective of the present paper is to study the problem of allocating (and sharing) the resources for this new type of calls and to compare the performance of different allocation strategies. The allocation strategy implemented in real networks is an iterative time-sharing strategy. We build an explicit formulation of this strategy which permits not only a faster implementation, but also an analytical evaluation of its performance. Moreover we describe an optimal allocation strategy consisting of assigning the resources in priority to the least consuming ones. A cornerstone to evaluate and compare the different allocation strategies is the so-called outage probability defined for each location as the probability that a user in this location doesn't get his required bit-rate. We compare the efficiency of different numerical methods to calculate it; and show that the inverse Laplace method is rapid and efficient. We also calculate the increase of the outage probability of the time-sharing strategy compared to the optimal one. Finally, we validate a method permitting to calculate analytically the average of the outage probabilities over the different locations.","PeriodicalId":296060,"journal":{"name":"Third International Conference on Communications and Networking","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125482507","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

Simulation and performance evaluation of DAG construction with RPL 基于RPL的DAG结构仿真与性能评价

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217747

Olfa Gaddour, A. Koubâa, S. A. Chaudhry, M. Tezeghdanti, Rihab Chaâri, M. Abid

{"title":"Simulation and performance evaluation of DAG construction with RPL","authors":"Olfa Gaddour, A. Koubâa, S. A. Chaudhry, M. Tezeghdanti, Rihab Chaâri, M. Abid","doi":"10.1109/ComNet.2012.6217747","DOIUrl":"https://doi.org/10.1109/ComNet.2012.6217747","url":null,"abstract":"In this paper, we simulate and analyze the performance of the network formation process with the RPL (IPv6 Routing Protocol for Low Power and Lossy Networks), which is a routing protocol specifically designed for Low power and Lossy Networks (LLN) compliant with 6LoWPAN (IPv6 Low power Wireless Personal Area Networks). One motivation behind this work is that RPL is the first prospective candidate routing protocol for low-power and lossy networks, which are a main component in the next generation Internet-of-Things. RPL is still under development, although having gained maturity, and is open to improvements. Indeed, there is a need to understand well its behavior, and investigate its relevance. Our analysis is based on the ContikiRPL accurate and realistic simulation model developed under Contiki operating system. The performance of RPL is evaluated and analyzed for different network settings to understand the impact of the protocol attributes on the network formation performance, namely in terms energy, storage overhead, communication overhead, network convergence time and the maximum hop count. We argue through simulation that RPL provides several features that make it suitable to large scale networks.","PeriodicalId":296060,"journal":{"name":"Third International Conference on Communications and Networking","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134320984","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: 68

Spectrum sensing based on STBC higher order statistics for cognitive radio systems 基于STBC高阶统计量的认知无线电系统频谱感知

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217748

Asma Ben Hadj Hmida, S. Cherif, Hichem Besbes

引用次数: 1

Firewall packet matching optimization using network traffic behavior and packet matching statistics 防火墙报文匹配优化使用网络流量行为和报文匹配统计

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217735

Z. Trabelsi, Hishem El Sayed, S. Zeidan

引用次数: 4

Precoding for MIMO systems with Grassmannian codebooks 用格拉斯曼码本对MIMO系统进行预编码

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217744

Imen Turki, I. Kammoun, M. Siala

{"title":"Precoding for MIMO systems with Grassmannian codebooks","authors":"Imen Turki, I. Kammoun, M. Siala","doi":"10.1109/ComNet.2012.6217744","DOIUrl":"https://doi.org/10.1109/ComNet.2012.6217744","url":null,"abstract":"In this paper, we investigate limited feedback precoding for two single-user MIMO systems. The first one employs spatial diversity at the transmitter and Maximum Ratio Combining at the receiver. The second one uses spatial multiplexing at the transmitter and V-BLAST signal processing at the receiver. For both systems, the precoder is selected at the receiver among a codebook and its index is conveyed to the transmitter through an error free feedback channel. For the first system, we consider two Grassmannian precoding codebooks and show through simulation results that a small number of feedback bits can reach the theoretical performance. For the case of a single-user system based on spatial multiplexing, we propose a novel criterion for selecting among codebook matrices the optimum precoding matrix at the receiver which maximizes the minimum signal to interference and noise ratio over the transmitted substreams. Simulation results show that our proposed selection criterion outperforms three other criteria introduced in the literature for the spatial muliplexing MIMO system. They also show a significant enhancement over the unprecoded spatial multiplexing system.","PeriodicalId":296060,"journal":{"name":"Third International Conference on Communications and Networking","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124306541","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

ARQ protocols for MIMO systems MIMO系统的ARQ协议

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217727

Fatma Zouaidi, H. Boujemaa, M. Siala

引用次数: 1

Secure handoff protocol in 3GPP LTE networks 3GPP LTE网络中的安全切换协议

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217746

Imen Elbouabidi, Ikbel Daly, F. Zarai

引用次数: 15

Energy efficiency analysis of base station cooperation under limited backhaul capacity 有限回程容量下基站合作的能源效率分析

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217733

M. Sarkiss, M. Kamoun

引用次数: 6

HIP Tiny Exchange (TEX): A distributed key exchange scheme for HIP-based Internet of Things TEX (HIP Tiny Exchange):一种基于HIP的物联网分布式密钥交换方案

Third International Conference on Communications and Networking Pub Date : 2012-06-14 DOI: 10.1109/ComNet.2012.6217736

Yosra Ben Saied, Alexis Olivereau

引用次数: 29