Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940893
E. Dall’Anese, S. Pupolin
In this paper, the effect of a training-based linear minimum mean squared error (LMMSE) channel estimator on the sum mutual information of the multiple-input multiple-output (MIMO) multiple access channel (MAC) is investigated. Adhering to the classical channel estimation philosophy, the overarching contribution of the present work consists in bridging pure information-theoretic bounds on the sum mutual information with practical system parameters that are inherent to the LMMSE channel estimator. The unboundness of the mutual information and conservation of the multiplexing gain is shown and, interestingly, the increase of the mutual information loss with respect of the perfect channel knowledge case with the increasing of the signal-to-noise-ratio (SNR) is revealed, with a close-form expression for the value bounding the loss for asymptotically high SNRs.
{"title":"Mutual information of block-faded MIMO multiple access channels with channel estimation error","authors":"E. Dall’Anese, S. Pupolin","doi":"10.1109/WIRELESSVITAE.2011.5940893","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940893","url":null,"abstract":"In this paper, the effect of a training-based linear minimum mean squared error (LMMSE) channel estimator on the sum mutual information of the multiple-input multiple-output (MIMO) multiple access channel (MAC) is investigated. Adhering to the classical channel estimation philosophy, the overarching contribution of the present work consists in bridging pure information-theoretic bounds on the sum mutual information with practical system parameters that are inherent to the LMMSE channel estimator. The unboundness of the mutual information and conservation of the multiplexing gain is shown and, interestingly, the increase of the mutual information loss with respect of the perfect channel knowledge case with the increasing of the signal-to-noise-ratio (SNR) is revealed, with a close-form expression for the value bounding the loss for asymptotically high SNRs.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"29 24 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82936265","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940907
Rudraksh Shrivastava, Arjun Singh, A. R. Mishra
With the demand for mobile communication services at an all-time high, multimedia services in particular have attracted the interest of the users. The unicast nature of current cellular networks puts severe strain on the limited spectrum when faced with demands for data intensive multimedia services. Powerful and efficient communication systems are needed, which provide high capacities, especially at the downlink. Furthermore, interactivity is essential for supporting the user needs and to extend the service offering. As one possible solution to meet the mentioned requirements, we consider the hybrid networks formed as a combination of the cellular networks (GSM, UMTS, etc.) and the mobile broadcast networks (DVB, MBMS, etc.).
{"title":"Planning hybrid telecom networks for enhanced multimedia services","authors":"Rudraksh Shrivastava, Arjun Singh, A. R. Mishra","doi":"10.1109/WIRELESSVITAE.2011.5940907","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940907","url":null,"abstract":"With the demand for mobile communication services at an all-time high, multimedia services in particular have attracted the interest of the users. The unicast nature of current cellular networks puts severe strain on the limited spectrum when faced with demands for data intensive multimedia services. Powerful and efficient communication systems are needed, which provide high capacities, especially at the downlink. Furthermore, interactivity is essential for supporting the user needs and to extend the service offering. As one possible solution to meet the mentioned requirements, we consider the hybrid networks formed as a combination of the cellular networks (GSM, UMTS, etc.) and the mobile broadcast networks (DVB, MBMS, etc.).","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89184469","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940867
A. Withana, Miyuru Dayarathna, M. Inakage, Kazunori Sugiura
In this paper, we present Infoshare: a flexible and scalable information authoring and sharing architecture for multimedia digital signage systems. Proposed architecture internally analyze and classify content, design and system infrastructure into three different layers using metadata extracted by user input and creates a highly scalable and easy to share digital signage environment. Furthermore, this architecture enables decentralized management by defining different user roles to handle each above mentioned layers. We believe that Infoshare architecture can make an efficient Creation, Distribution and Installation (CDI) cycle for multimedia digital signage content while allowing smooth scalability and management of the system. We applied this architecture to a prototype digital signage system. Paper describes the system implementation, key features and future development directions.
{"title":"Infoshare: Content, design and system independent multimedia signage architecture","authors":"A. Withana, Miyuru Dayarathna, M. Inakage, Kazunori Sugiura","doi":"10.1109/WIRELESSVITAE.2011.5940867","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940867","url":null,"abstract":"In this paper, we present Infoshare: a flexible and scalable information authoring and sharing architecture for multimedia digital signage systems. Proposed architecture internally analyze and classify content, design and system infrastructure into three different layers using metadata extracted by user input and creates a highly scalable and easy to share digital signage environment. Furthermore, this architecture enables decentralized management by defining different user roles to handle each above mentioned layers. We believe that Infoshare architecture can make an efficient Creation, Distribution and Installation (CDI) cycle for multimedia digital signage content while allowing smooth scalability and management of the system. We applied this architecture to a prototype digital signage system. Paper describes the system implementation, key features and future development directions.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91302726","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940872
Z. Abbas, F. Li
Network power consumption reduction has recently become an active research topic. In this paper, we propose a novel approach to save power consumption of a three-cell microcellular network. When the traffic load in the middle cell is low, it can be switched-off and its users are covered. This is enabled by increasing the transmission power of one sector antenna in the two neighboring cells. Numerical results show that by increasing antenna transmission power of the two sectors, the overall network power consumption can be reduced.
{"title":"A system-level power saving approach for cellular networks with microcells/picocells","authors":"Z. Abbas, F. Li","doi":"10.1109/WIRELESSVITAE.2011.5940872","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940872","url":null,"abstract":"Network power consumption reduction has recently become an active research topic. In this paper, we propose a novel approach to save power consumption of a three-cell microcellular network. When the traffic load in the middle cell is low, it can be switched-off and its users are covered. This is enabled by increasing the transmission power of one sector antenna in the two neighboring cells. Numerical results show that by increasing antenna transmission power of the two sectors, the overall network power consumption can be reduced.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"42 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91169950","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940859
D. Noguet, Rohit Datta, P. Lehne, M. Gautier, G. Fettweis
Regulatory regimes for opportunistic usage is being discussed in many countries for the so called TV White Space channels. The key objective of the regulators is to ensure that opportunistic systems can coexist with incumbent systems without causing harmful interference. However, they do not specify how these opportunistic systems must be designed to guarantee these requirements and to exploit White Spaces in an optimal way. This paper gathers key regulatory rules for opportunistic usage in the TV bands, and illustrates how these rules are turned into technical requirements within the framework of the European FP7 QoSMOS project.
{"title":"TVWS regulation and QoSMOS requirements","authors":"D. Noguet, Rohit Datta, P. Lehne, M. Gautier, G. Fettweis","doi":"10.1109/WIRELESSVITAE.2011.5940859","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940859","url":null,"abstract":"Regulatory regimes for opportunistic usage is being discussed in many countries for the so called TV White Space channels. The key objective of the regulators is to ensure that opportunistic systems can coexist with incumbent systems without causing harmful interference. However, they do not specify how these opportunistic systems must be designed to guarantee these requirements and to exploit White Spaces in an optimal way. This paper gathers key regulatory rules for opportunistic usage in the TV bands, and illustrates how these rules are turned into technical requirements within the framework of the European FP7 QoSMOS project.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"39 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80716779","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940914
U. Pandya, U. Desai
An increasing number of patients, high cost, lack of mobility, isolation from professional environment, among others issues demand a technology in which a patient should be monitored from home instead of hospital. This will force the development of more cost-effective and advanced wireless telemedicine solutions. The parameters like types of input (i.e. ECG, blood pressure, body temperature, etc.), sampling rate, distance between wireless modules, number of sensors connected in wireless network, adaptability of algorithms for signal processing, size of the device and power consumption can affect the performance and cost of the systems. This paper illustrates hardware for wireless ECG system and the performance of various algorithms applied to ECG received wirelessly in the standing and sitting position of patient; and with different sampling frequencies to meet the requirements of system low cost and easily adaptability. To demonstrate the work, a prototype of ECG front end is developed, tested and interfaced with Bluetooth module which digitizes the analog ECG signal and transmits the signal wirelessly to Bluetooth enabled devices. The algorithms like piecewise moving average, moving average, and S-Golay algorithm are implemented on the captured ECG with different sampling frequencies and with different positions of patient; and are compared. A template for moving average and piecewise algorithms is written in Microsoft (MS) Excel and tested for real time data update. The proposed system has successfully used the Bluetooth technology to transmit and receive physical signals along with testing of operational features of transmitting device through the air. The results show that a novel algorithm is required which can efficiently remove high frequency noise in any physical condition of patient and can be easily implemented in existing Mobile/PDA/Laptop, etc. to meet the system requirement of low cost and adaptability.
{"title":"Feasibility study of filtering algorithms for low cost wireless physiological monitoring system","authors":"U. Pandya, U. Desai","doi":"10.1109/WIRELESSVITAE.2011.5940914","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940914","url":null,"abstract":"An increasing number of patients, high cost, lack of mobility, isolation from professional environment, among others issues demand a technology in which a patient should be monitored from home instead of hospital. This will force the development of more cost-effective and advanced wireless telemedicine solutions. The parameters like types of input (i.e. ECG, blood pressure, body temperature, etc.), sampling rate, distance between wireless modules, number of sensors connected in wireless network, adaptability of algorithms for signal processing, size of the device and power consumption can affect the performance and cost of the systems. This paper illustrates hardware for wireless ECG system and the performance of various algorithms applied to ECG received wirelessly in the standing and sitting position of patient; and with different sampling frequencies to meet the requirements of system low cost and easily adaptability. To demonstrate the work, a prototype of ECG front end is developed, tested and interfaced with Bluetooth module which digitizes the analog ECG signal and transmits the signal wirelessly to Bluetooth enabled devices. The algorithms like piecewise moving average, moving average, and S-Golay algorithm are implemented on the captured ECG with different sampling frequencies and with different positions of patient; and are compared. A template for moving average and piecewise algorithms is written in Microsoft (MS) Excel and tested for real time data update. The proposed system has successfully used the Bluetooth technology to transmit and receive physical signals along with testing of operational features of transmitting device through the air. The results show that a novel algorithm is required which can efficiently remove high frequency noise in any physical condition of patient and can be easily implemented in existing Mobile/PDA/Laptop, etc. to meet the system requirement of low cost and adaptability.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"21 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77891733","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940860
M. Chowdhury, Josef Noll
Being center of both public and hazardous material transport system, railway is one of the most important critical infrastructures. This research is aiming to support secure access to information, dependable and reliable operation, efficient management and maintenance of the railway infrastructure. In this regard, this paper proposes a framework where sensors retrieve the contextual data from the infrastructure and a middleware processes these data and the semantics of data to derive decisions. These decisions allow monitoring of information and generate alarms for faults. The decisions may recommend actions to deal with the faults and provide secure access to information only to authorized personnel. The semantic technologies such as ontology language, rule language and reasoning process are used to design the middleware. The paper includes detailed description of the middleware and an overview of its implementation steps.
{"title":"Securing critical infrastructure: A semantically enhanced sensor based approach","authors":"M. Chowdhury, Josef Noll","doi":"10.1109/WIRELESSVITAE.2011.5940860","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940860","url":null,"abstract":"Being center of both public and hazardous material transport system, railway is one of the most important critical infrastructures. This research is aiming to support secure access to information, dependable and reliable operation, efficient management and maintenance of the railway infrastructure. In this regard, this paper proposes a framework where sensors retrieve the contextual data from the infrastructure and a middleware processes these data and the semantics of data to derive decisions. These decisions allow monitoring of information and generate alarms for faults. The decisions may recommend actions to deal with the faults and provide secure access to information only to authorized personnel. The semantic technologies such as ontology language, rule language and reasoning process are used to design the middleware. The paper includes detailed description of the middleware and an overview of its implementation steps.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88194136","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940922
Avinash Pura, C. V. Raghu
Wireless projection technology has made a quantum leap forward in terms of portability, ease of use, performance and functionality. Today, slide projectors have become a part of the wireless LAN, and the user planning to project his/her desktop is just one click away from projector. This makes the projector easily accessible similar to other wireless equipments like printer, scanner etc. available on WLAN. These current generation wireless projectors have made real-time interaction between a room-full of business executives or students a reality. An adapter to convert a wired projector to wireless projector will help the community who might have already invested money on high end wired projectors. With this, owners of the wired projectors enjoy almost all the benefits of wireless projectors with minimal investment. This project involves design of such an adapter for wired projectors with the necessary softwares for the user PC or Laptop. The adapter is designed around Beagle Board which is a 3" × 3" single board computer from Texas Instruments.
{"title":"Design of a wireless adapter for multimedia projectors","authors":"Avinash Pura, C. V. Raghu","doi":"10.1109/WIRELESSVITAE.2011.5940922","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940922","url":null,"abstract":"Wireless projection technology has made a quantum leap forward in terms of portability, ease of use, performance and functionality. Today, slide projectors have become a part of the wireless LAN, and the user planning to project his/her desktop is just one click away from projector. This makes the projector easily accessible similar to other wireless equipments like printer, scanner etc. available on WLAN. These current generation wireless projectors have made real-time interaction between a room-full of business executives or students a reality. An adapter to convert a wired projector to wireless projector will help the community who might have already invested money on high end wired projectors. With this, owners of the wired projectors enjoy almost all the benefits of wireless projectors with minimal investment. This project involves design of such an adapter for wired projectors with the necessary softwares for the user PC or Laptop. The adapter is designed around Beagle Board which is a 3\" × 3\" single board computer from Texas Instruments.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"28 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78342382","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940869
Minesh Ade, N. Doulamis, Shyam S. Wagle, M. G. Ullah
Currently, Peer to peer (P2P) technology has dramatically transformed the landscape of the Internet traffic, which attracts researchers to do more research on the deployment of P2P in heterogeneous networks. Current GSM/GPRS system cannot support real P2P, because it does not allow mobile terminal to get a fixed IP address, but in 3G it is possible. On the other hand IP Multimedia Subsystem (IMS) is a key technology of 3G; it uses SIP to control sessions of higher layer services and has ability of multiple access network combination. We are currently working on SARACEN, one of the FP7 project in Europe which is based on multimedia communication. The main goal of the SARACEN project is to research and develop a platform, over which distribution of multimedia streams can be supported through innovative techniques, both as regards media encoding, but also as regards media distribution using P2P[1]. In media distribution, we found few challenges with P2P like piracy, security, content delivery time, bandwidth management etc. In this paper we are going to propose a new environment with collaboration of P4P (Provider Portal for P2P) and IMS. This proposed architecture consists of P2PSIP, DRM, AAA, iTracker, SIP AS, Gateway and other components. This architecture is not only for our project but also for general purpose to resolve the p2p challenges in heterogeneous environment.
当前，点对点(P2P)技术已经极大地改变了互联网的流量格局，这吸引了研究者们对P2P在异构网络中的部署进行更多的研究。目前的GSM/GPRS系统不能支持真正的P2P，因为它不允许移动终端获得固定的IP地址，但在3G中是可能的。另一方面，IP多媒体子系统(IMS)是3G的关键技术;它采用SIP协议控制高层业务的会话，具有多址网络组合的能力。我们目前正在致力于SARACEN，这是欧洲FP7项目之一，基于多媒体通信。SARACEN项目的主要目标是研究和开发一个平台，在这个平台上，多媒体流的分发可以通过创新技术得到支持，包括媒体编码，以及使用P2P的媒体分发[1]。在媒体分发方面，我们发现P2P几乎没有盗版、安全、内容交付时间、带宽管理等方面的挑战。本文提出了一个P4P (Provider Portal for P2P)和IMS协同工作的新环境。该架构由P2PSIP、DRM、AAA、iTracker、SIP AS、Gateway等组件组成。该体系结构不仅适用于我们的项目，也适用于解决异构环境下的p2p挑战。
{"title":"Collaboration of P4P and IMS: Solution to P2P challenges","authors":"Minesh Ade, N. Doulamis, Shyam S. Wagle, M. G. Ullah","doi":"10.1109/WIRELESSVITAE.2011.5940869","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940869","url":null,"abstract":"Currently, Peer to peer (P2P) technology has dramatically transformed the landscape of the Internet traffic, which attracts researchers to do more research on the deployment of P2P in heterogeneous networks. Current GSM/GPRS system cannot support real P2P, because it does not allow mobile terminal to get a fixed IP address, but in 3G it is possible. On the other hand IP Multimedia Subsystem (IMS) is a key technology of 3G; it uses SIP to control sessions of higher layer services and has ability of multiple access network combination. We are currently working on SARACEN, one of the FP7 project in Europe which is based on multimedia communication. The main goal of the SARACEN project is to research and develop a platform, over which distribution of multimedia streams can be supported through innovative techniques, both as regards media encoding, but also as regards media distribution using P2P[1]. In media distribution, we found few challenges with P2P like piracy, security, content delivery time, bandwidth management etc. In this paper we are going to propose a new environment with collaboration of P4P (Provider Portal for P2P) and IMS. This proposed architecture consists of P2PSIP, DRM, AAA, iTracker, SIP AS, Gateway and other components. This architecture is not only for our project but also for general purpose to resolve the p2p challenges in heterogeneous environment.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"94 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77312893","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}
Pub Date : 2011-07-05DOI: 10.1109/WIRELESSVITAE.2011.5940822
A. Shafigh, K. Abdollahi
A Mobile ad hoc network is a collection of wireless communication nodes that dynamically form a network without any fixed infrastructure. One of the most important topics in these networks is multicast routing. Although multicast algorithms are desirable in many situations, their forwarding mechanism and network resource consumption makes them significantly less efficient than unicast routing algorithms. The most significant type of multicast protocols are mesh-based algorithms which, use periodic flooding mechanism to construct paths. Flooding rate in the multicast routing protocols depends on node mobility and input traffic. Thus, this rate should adaptively adjust to restrict overheads, while there are continuously a complete mesh between receivers and senders in network. In this paper, a novel prediction model is proposed to compute the best rate of flooding mechanism. Our results show substantial improvement in overhead while has no reduction in the performance of the multicast routing protocol.
{"title":"Increasing performance of ODMRP by using learning automata","authors":"A. Shafigh, K. Abdollahi","doi":"10.1109/WIRELESSVITAE.2011.5940822","DOIUrl":"https://doi.org/10.1109/WIRELESSVITAE.2011.5940822","url":null,"abstract":"A Mobile ad hoc network is a collection of wireless communication nodes that dynamically form a network without any fixed infrastructure. One of the most important topics in these networks is multicast routing. Although multicast algorithms are desirable in many situations, their forwarding mechanism and network resource consumption makes them significantly less efficient than unicast routing algorithms. The most significant type of multicast protocols are mesh-based algorithms which, use periodic flooding mechanism to construct paths. Flooding rate in the multicast routing protocols depends on node mobility and input traffic. Thus, this rate should adaptively adjust to restrict overheads, while there are continuously a complete mesh between receivers and senders in network. In this paper, a novel prediction model is proposed to compute the best rate of flooding mechanism. Our results show substantial improvement in overhead while has no reduction in the performance of the multicast routing protocol.","PeriodicalId":68078,"journal":{"name":"无线互联科技","volume":"3 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2011-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88104580","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}
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