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Propagation Loss Models Characterization for GSM 900MHz at Kuala Lumpur and Putrajaya: Propagation loss modelling of cellular mobile system is important for coverage design and prediction. Propagation loss models are usually used to predict the received signal strength at a certain distance from the base station. For site planning, the transmission loss and signal coverage can be predicted by a set of...; Tags: Kuala Lumpur, Mobile, Mobile System, GSM, Propagation Loss, Advertising & Promotion, Cellular Phones, Marketing, Consumer Electronics, Personal Technology; White papers 2005-05-26

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Congestion Propagation Among Routers in the Internet: In recent years, various non-linear phenomena of the Internet have been discovered. For instance, it is reported that congestion of a router propagates to neighboring routers like a wave. Several researches on congestion propagation among routers have been performed. However, in these researches, cause of congestion propagation and condition that...; Tags: Internet, Router, Congestion Propagation, Routers & Switches, Network Technology, Networking; White papers 2007-11-16
User Identity Propagation in Web Service Implementation: Implementation of Web services requires multiple levels of security, including communications security, secure access to the Web service endpoint, and identity propagation between service consumer and implementation. In this paper, one focuses on user identity propagation. One also learns about the role of identity propagation in the overall Web services...; Tags: Web, Propagation, Web Service, User Identity, Identity Propagation, Channel Management, Web Services, Security, Marketing, Enterprise Software, Software; White papers 2006-11-14
A Study of Relevance Propagation for Web Search: Different from traditional information retrieval, both content and structure are critical to the success of Web information retrieval. In recent years, many relevance propagation techniques have been proposed to propagate content information between web pages through web structure to improve the performance of web search. This paper proposes a generic...; Tags: Web, Propagation, Internet Search, Association For Computing Machinery, Information Retrieval, Channel Management, Marketing; White papers 2005-08-19
Performance of Space-Frequency Coded Broadband OFDM Under Real-World Propagation Conditions: This paper studies the impact of the propagation environment on the performance of space-frequency coded broadband OFDM systems. In particular, the paper derives the error-rate performance of space-frequency codes in the presence of transmit and receive correlation, and quantifies the maximum achievable diversity order and coding gain as a function...; Tags: ETH Zurich, Performance, Broadband, Performance Management, OFDM, Broadband Internet, Network Technology, Telecommunications, Human Resources, Workforce Management, Wireless, Networking; White papers

Spatial-Temporal Modeling of Malware Propagation in Networks: Network security is an important task of network management. One threat to network security is malware malicious software propagation. One type of malware is called topological scanning that spreads based on topology information. The focus of this paper is on modeling the spread of topological malwares, which is important for...; Tags: Network, Propagation, Network Security, Malware, Spyware, Adware & Malware, Cyberthreats, Viruses And Worms, Security, Networking; White papers
True Parallel Processing in Artificial Neural Networks: The area of artificial neural networks, which dates back to the early twentieth century, could only offer positive contributions to technology after the back-propagation algorithm was proposed in 1986. In this note an alternative algorithm to the gradient descent used in back-propagation is proposed. This algorithm is based on the...; Tags: Algorithm, Network, Neural Network, Parallel Processing, Emerald, Engineering; White papers 2007-10-22
Impact of the Propagation Environment on the Performance of Space-Frequency Coded MIMO-OFDM: Previous work on space-frequency coded MIMOOFDM has been restricted to idealistic propagation conditions. In this paper, using a broadband MIMO channel model taking into account Ricean K-factor, transmit and receive angle spread, and antenna spacing, we study the impact of the propagation environment on the performance of space-frequency coded MIMO-OFDM.; Tags: ETH Zurich, Performance, Environment, MIMO-OFDM, Performance Management, Human Resources, Workforce Management; White papers
Complete Convergence of Message Passing Algorithms for Some Satisfiability Problems: This paper makes a modest step towards providing rigorous analysis that proves the effectiveness of message passing algorithms for random 3SAT. This paper analyzes the performance of Warning Propagation, a popular message passing algorithm that is simpler than survey propagation. This paper shows that for 3CNF formulas generated under the...; Tags: Message, Algorithm, Propagation, Convergence, Engineering, VOIP, Telecommunications, Networking; White papers 2006-04-01
Quick Weight Loss (exe): With the Quick Weight Loss Program you will be able to achieve quick weight loss, plus lots of information about weight loss supplements, weight loss pills, and weight loss diets. Fast weight loss is achievable with the Quick Weight Loss Program v2; Tags: Loss; Software downloads 2007-04-27
Real-World Environment Models for Mobile Network Evaluation: Simulation environments are an important tool for the evaluation of new concepts in networking. The study of mobile ad hoc networks depends on understanding protocols from simulations, before these protocols are implemented in a real-world setting. To produce a real-world environment within which an ad hoc network can be formed...; Tags: Mobile Network, Mobile, Network, University Of California, Networking; White papers
Packet Scheduling for Video Streaming Over Wireless With Content-Aware Packet Retry Limit: This paper proposes a content-aware retry limit adaptation scheme for video streaming over IEEE 802.11 Wireless LANs WLANs. Video packets of different importance are unequally protected with different retry limits at the MAC layer. The loss impact of each packet is estimated to guide the selection of its retry limit....; Tags: Aware, Packet, Streaming Video, Corporate Communications, Web Site Development, Web Technology, Digital Video, Wireless LANs, Wireless, Marketing, Internet, Personal Technology; White papers 2006-07-09
A Study of Bluetooth Propagation Using Accurate Indoor Location Mapping: The ubiquitous computing community has widely researched the use of 802.11 for the purpose of location inference. Meanwhile, Bluetooth is increasingly widely deployed due to its low power consumption and cost. This paper describes a study of Bluetooth radio propagation using an accurate indoor location system to conduct fine-grained signal...; Tags: Propagation, Ubiquitous Computing, Springer Science+Business Media, Ubiquitous Computing Community, Bluetooth, Wi-Fi, Wireless; White papers 2005-07-19
Application of Genetic Algorithm for Large Scale Coverage Prediction in GSM Cellular Mobile System: A considerable interest has been generated in finding solutions to predict average field strengths and multipath signals in macro-cells for radio cellular network. The predictions are required for a proper coverage planning and are the basis for the high-level network planning process. In this paper, well-known propagation path loss model...; Tags: Algorithm, GSM, Genetic Algorithm, Engineering, Networking; White papers 2005-05-26
Collaboration and Multimedia Authoring on Mobile Devices: This paper introduces adaptation-aware editing and progressive update propagation, two novel mechanisms that enable authoring multimedia content and collaborative work on mobile devices. Adaptation-aware editing enables editing content that was adapted to reduce download time to the mobile device. Progressive update propagation reduces the time for propagating content generated at...; Tags: Multimedia, Collaboration, Mobile, Propagation, Mobile Device, Update Propagation, Advertising & Promotion, Marketing; White papers 2007-01-01
Maintaining Weight Loss (exe): This is an e-book that includes the information on maintaining Weight Loss. Once you have started losing weight, it is crucial to think of how to maintain that weight loss in the days ahead. It may seem hard to believe, but taking the weight off is the easy part. Maintaining...; Tags: Loss, E-books, Personal Technology; Software downloads 2007-07-03
Observations and Models of Time-Varying Channel Gain in Crowded Areas: Testbeds are projected to be the next generation of mechanisms for protocol verification and performance validation of wireless networks. One important objective of these testbeds is to depict the propagation mechanism accurately. This paper presents measurements and models of propagation between stationary transmitters and receivers in a dynamic environment. These...; Tags: Environment, Performance Management, Human Resources, Workforce Management; White papers 2005-12-11
OPNET Model of TCP With Adaptive Delay and Loss Response for Broadband GEO Satellite Networks: Transmission Control Protocol TCP provides reliable transport services for Internet applications. Broadband Geostationary Earth Orbit GEO satellite networks play an important role in providing Internet access and network connectivity. They are characterized by long propagation delays and high bit error rates, which negatively affect TCP performance. The paper proposed a...; Tags: Broadband, TCP, Tcp/Ip, Networking; White papers 2007-08-12
Analysis of Belief Propagation for Non-Linear Problems: The Example of CDMA (or: How to Prove Tanaka's Formula): This paper considers the CDMA (Code-Division Multiple-Access) multi-user detection problem for binary signals and additive white gaussian noise. The paper proposes a spreading sequences scheme based on random sparse signatures, and a detection algorithm based on Belief Propagation BP with linear time complexity. In the new scheme, each user conveys...; Tags: CDMA, Analysis, University Of California, Cellular Phones, Consumer Electronics, Personal Technology; White papers 2006-02-07
The Impact of Radio Propagation Prediction on Urban UMTS Planning: This case study outlines the importance of an accurate radio propagation planning for UMTS networks. Due to the specific UMTS technology 3G users may experience much lower service levels then expected or even failures if the network is planned inaccurately. But dissatisfied customers and vendors of Value Added Services can...; Tags: UMTS, Network, Radio, Cellular Phones, Advertising & Promotion, Consumer Electronics, Personal Technology, Marketing; Case studies

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