Tag: Wireless

December 25, 2023

Dynamic Wireless Sensor Networks

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Free Download Dynamic Wireless Sensor Networks
English | 2014 | ISBN: 1848215312 | 146 Pages | EPUB (True) | 3 MB
In this title, the authors leap into a novel paradigm of scalability and cost-effectiveness, on the basis of resource reuse. In a world with much abundance of wirelessly accessible devices, WSN deployments should capitalize on the resources already available in the region of deployment, and only augment it with the components required to meet new application requirements. However, if the required resources already exist in that region, WSN deployment converges to an assignment and scheduling scheme to accommodate for the new application given the existing resources. Such resources are polled from many fields, including multiple WSNs already in the field, static networks (WiFi, WiMAX, cellular, etc) in addition to municipal, industrial and mobile resources.The architecture, framework and pricing policy, as well as approaches for backward compatibility with existing deployments, are presented in this book. We elaborate on the formalization of the problem, and contrast with existing work on coverage. This paradigm adopts optimal assignments in WSNs and exploits dynamic re-programming for boosting post-deployment and backward compatible protocols.

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September 28, 2023

Wireless OFDM Systems How to make them work

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Free Download Wireless OFDM Systems: How to make them work? by Marc Engels
English | PDF | 2002 | 218 Pages | ISBN : 1402071167 | 9.6 MB
Wireless Local Area Networks (WLANs) experience a growing popularity recently. Where WLANs were primarily used for niche applications in the past, they are now deployed as wireless extensions to computer networks. The increase of the datarates from 2 Mbps up to 11 Mbps for roughly a constant price has played a major role in this breakthrough. As a consequence, an even greater success can be envisioned for the more recent OFDM-based WLAN standards in the 5 GHz band, which offer up to 54 Mbps. At IMEC we have realised this potential already several years ago and have established a successful research programme on OF- based WLAN. In 1995, we started our research on wireless OFDM in the frame of a – operation project with SAIT, a Belgian telecom company. The goal of the project was to establish a robust network for industrial environments. This resulted in a first OFDM chip, supporting QPSK, for wireless networking at the end of the project (1999). 1999 was also the start of an intense co-operation with National Semiconductor Inc., which resulted in a second generation ASIC in 2000. This OFDM processor supports up to QAM-64 and has a more optimal channel estimation algorithm.

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September 28, 2023

Wireless Mesh Networks

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Free Download Wireless Mesh Networks
English | 2022 | ISBN: 1774691027 | 258 pages | True PDF | 19.65 MB
In this 21st century era, people tend to find another space for improving everything, including technology. This includes the possibility of reaching out more using routers and gadgets. Even businesses and mode of transportation involves a high demand on using a WMN or Wireless Mesh Network. WMN which is commonly known as one of the primary technology nowadays. This also helps in terms of understanding the network connectivity at any time, at a low cost. In Wireless Mesh Network, there are two kinds of a technique used, the Mesh Nodes and Mesh Clients. This two are known to be the backbone, the bridge, the way of reaching out for connectivity. One key challenge in adopting wireless mesh networking is the capacity of effective throughout that can be offered to the clients. Due to the broadcast nature of the wireless medium, signals transmitted from different devices over the same channel will result in a probable connection loss. Despite the probability of problems that may occur, the WMN is starting to grow its volume into a larger scale of communication. This book is a significant platform to discuss its future competencies and proficiencies in the communication of a greater ecosystem using Wireless Mesh Network.

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September 28, 2023

System-Level Power Optimization for Wireless Multimedia Communication Power Aware Computing

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Free Download System-Level Power Optimization for Wireless Multimedia Communication: Power Aware Computing by Ramesh Karri, David Goodman
English | PDF | 2002 | 215 Pages | ISBN : 140207204X | 8.3 MB
System-Level Power Optimization for Wireless Multimedia Communication Power Aware Computing focuses on emerging issues in power aware portable multimedia communications devices beyond low-power electronic design. Specifically, this work is a compilation of system-level power management approaches including theoretical and simulation studies, field measurements, algorithm development and experimental test beds related to low power computing, mobile communication and networking. The authors address integrative power optimization studies that jointly consider computing, communications and networking. The chapters reflect four clusters of work: theoretical studies, work related to networks of sensors, techniques for optimizing hardware and software design, and application-level issues.

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September 28, 2023

Secure Localization and Time Synchronization for Wireless Sensor and Ad Hoc Networks

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Free Download Secure Localization and Time Synchronization for Wireless Sensor and Ad Hoc Networks by Radha Poovendran, Sumit Roy, Cliff Wang
English | PDF | 2007 | 396 Pages | ISBN : 0387327215 | 58.3 MB
Localization is a critical process in mobile ad hoc networks and wireless sensor networks. Wireless sensor node or MANET devices need to know the network’s location or its relative location, with respect to the rest of the network neighbors. However, due to the open spectrum nature of wireless communication, it is subject to attacks and intrusions. Hence the wireless network synchronization needs to be both robust and secure. Furthermore, issues such as energy constraints and mobility make the localization process even more challenging.

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