2010 17th International Conference on Telecommunications最新文献_第5页

Overhead of shared NACK feedback channels 共享NACK反馈通道的开销

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478768

T. Höhne, Yi Wu

引用次数: 2

Air interface dimensioning techniques for coverage and capacity-limited HSPA based networks 基于覆盖和容量限制的HSPA网络的空中接口尺寸技术

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478740

A. Masmoudi, S. Tabbane

引用次数: 2

Throughput maximization over temporally correlated fading channels in cognitive radio networks 认知无线电网络中时间相关衰落信道的吞吐量最大化

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478781

Doha Hamza, M. Nafie

{"title":"Throughput maximization over temporally correlated fading channels in cognitive radio networks","authors":"Doha Hamza, M. Nafie","doi":"10.1109/ICTEL.2010.5478781","DOIUrl":"https://doi.org/10.1109/ICTEL.2010.5478781","url":null,"abstract":"We consider a primary link and a secondary link, each composed of a transmitter and a receiver. The primary channel and the channel between the secondary transmitter and the primary receiver follow a first-order Markov model for channel variation over time. Under this assumption of temporal correlation and via exploiting the channel state information (CSI) feedback, we pose the cognitive power control problem as the maximization of secondary throughput subject to a constraint on the primary outage. To solve this problem, we assume that the primary transmitter sends with a constant-rate and with a constant-power, and we consider two types of feedback: perfect delayed CSI and one-bit automatic repeat request (ARQ) CSI. To reduce the computational complexity in the case of ARQ-CSI, we reformulate the cognitive power control problem as the maximization of the weighted sum of primary and secondary throughput which we solve optimally for delayed-CSI and greedily for ARQ-CSI. We also solve the cognitive power control problem for a constant-power variablerate primary link where the primary transmitter exploits the channel temporal correlation. In this scheme, we only consider a temporally correlated primary link and perfect delayed CSI. We solve the weighted sum throughput maximization problem under two scenarios. In the first, the primary rate is adapted without considering the secondary link. In the second, the primary rate and secondary power are determined simultaneously assuming a central controller.","PeriodicalId":208094,"journal":{"name":"2010 17th International Conference on Telecommunications","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115920453","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

Ant-DYMO: A bio-inspired algorithm for MANETS Ant-DYMO:一种生物启发的MANETS算法

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478808

J. Martins, Sergio Correia, J. Celestino

{"title":"Ant-DYMO: A bio-inspired algorithm for MANETS","authors":"J. Martins, Sergio Correia, J. Celestino","doi":"10.1109/ICTEL.2010.5478808","DOIUrl":"https://doi.org/10.1109/ICTEL.2010.5478808","url":null,"abstract":"Mobile ad hoc networks are a set of wireless mobile devices that communicate without fixed infrastructure, forming temporary networks dynamically. Each node in such a network is more than a data receiver/sender, it is also a router that forwards data packets to its proper destination. The main characteristics of ad hoc networks are frequent change in the network topology, limited power of its links and restriction on the bandwidth. A routing protocol for ad hoc networks is composed of a routing algorithm with a set of rules that monitor the operation of the network. Thus, the nodes participating in the network have an important role in the management of resources in ad hoc networks. Ant-based routing is an efficient routing scheme based on the behavior of foraging ants. The study of the collective behavior of ants shows that they are able to find the shortest path from the nest to a food source, using a particular mode of communication by the means of a chemical substance called pheromones. This work uses a mechanism from collective intelligence applied to ad hoc networks, in particular the application of ants for routing in ad hoc networks. We have brought some characteristics from the Dynamic MANET On-demand Routing protocol and other MANET protocols in order to propose the new routing algorithm, called Ant-DYMO. We compare Ant-DYMO with DYMO, and we show that our proposition has improved the packet loss and the end-to-end delay.","PeriodicalId":208094,"journal":{"name":"2010 17th International Conference on Telecommunications","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115997991","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: 34

Novel frame synchronization for WiMAX OFDM systems WiMAX OFDM系统的新型帧同步

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478754

Amin Azari, M. G. Roozbahani, S. Nader-Esfahani, Mahdi Shakiba

引用次数: 6

Energy-time efficiency of two routing strategies with chase packets in expanding ring search 扩展环搜索中两种带追包路由策略的能量-时间效率

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478807

Ida M. Pu, Jinguk Kim, Yuji Shen

引用次数: 7

BiO4SeL: A Bio-Inspired routing algorithm for Sensor Network Lifetime Optimization BiO4SeL:一种基于生物的传感器网络生命周期优化路由算法

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478805

Levi Bayde Ribeiro, M. D. Castro

引用次数: 22

A capable, lightweight communication concept by combining Ambient Network approaches with Cognitive Radio aspects 通过将环境网络方法与认知无线电方面相结合，实现功能强大的轻量级通信概念

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478784

M. Vodel, M. Caspar, W. Hardt

{"title":"A capable, lightweight communication concept by combining Ambient Network approaches with Cognitive Radio aspects","authors":"M. Vodel, M. Caspar, W. Hardt","doi":"10.1109/ICTEL.2010.5478784","DOIUrl":"https://doi.org/10.1109/ICTEL.2010.5478784","url":null,"abstract":"In this paper, we present a feasible communication concept within the field of cognitive radios and ambient networking. The approach deals with the integration of different radio modules into an embedded communication platform. Basic idea is the simultaneous coexistence of multiple independent network interfaces, which allows us to combine the advantages of different communication technologies. At the same time we bypass the disadvantages of one single radio standard with its application specific design limitations. The result is a lightweight, radio standard spanning communication system, specially in the field of mobile ad hoc networks. The approach enables interesting new ways to create a reliable, heterogeneous network infrastructure. To avoid the influences of interferences in the topology, a special Link Management Unit identifies an increasing interference behaviour based on parameters like the packet loss rate, packet transmission time or fluctuations of the signal quality. With this knowledge base, we are able to adapt the transmission technology dynamically. Thus, the system takes an active influence on the local interference level in the network. Unlike other related research projects, this concept requires no special hardware devices and no complex software architecture. Instead, our approach focuses on standardised, low cost hardware components to realise an embedded communication platform. The presented paper analyses the feasibility with application-specific simulations and evaluate the results based on real world measurements with a designed prototype platform.","PeriodicalId":208094,"journal":{"name":"2010 17th International Conference on Telecommunications","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121631660","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

New achievable rate regions for interference and cognitive radio channels 干扰和认知无线电信道的新可实现速率区域

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478850

G. Hodtani

引用次数: 2

Implementing Globally Asynchronous Locally Synchronous processor pipeline on commercial synchronous FPGAs 在商用同步fpga上实现全局异步局部同步处理器流水线

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478856

H. Farouk, M. El-Hadidi

引用次数: 8