The international conference Personal Wireless Communications (PWC 2007) was the twelfth conference of its series aimed at stimulating technical exchange between researchers, practitioners and students interested in mobile computing and wireless networks. On behalf of the International Advisory Committee, it is our great pleasure to welcome you to the proceedings of the 2007 event. Wireless communication faces dramatic changes. The wireless networks are expanding rapidly in subscribers, capability, coverage, and applications, and costs continue to decrease. Mobile devices are becoming ubiquitous with greatly expanded computing power and memory, improved displays, and wireless lo- cal and personal area connectivity. The PWC 2007 program covered a variety of research topics that are of current interest, starting with Ad Hoc Networks, WiMAX, Heterogeneous Networks, Wireless Networking, QoS and Security, Sen- sor Networks, Multicast and Signal processing. This year we enriched PWC with a poster session covering diversity topics related to wireless networks (e.g., fil- ters, current conveyors, etc.). We would like to thank the International Advisory Committee members and the referees. Without their support, the program organization of this conference would not have been possible. We are also indebted to many individuals and organizations that made this conference possible (Czech Technical University, IFIP, ESTEC). In particular, we thank the members of the Organizing Commit- tee for their help in all aspects of the organization of this conference.
The Bhagvad Gita (18.49) Compared to traditional carrier-based, Ultra-Wide Band (UWB), or carrier-less, systems implement new paradigms in terms of signal generation and reception. Thus, designing an UWB communication system requires the understanding of how excess bandwidth and very low transmitted powers can be used jointly to provide a reliable radio link. UWB offers systems transceiver potential for very simple implementations. Comparison between UWB and traditional narrow-band systems highlights the following features: Large bandwidth enables very fine time-space resolution for accurate lo- tion of the UWB nodes and for distributing network time stamps. Very short pulses are effectively counter-fighting the channel effect in very dense multipath environments. Data rate (number of pulses transmitted per bit) can be traded with power emission control and distance coverage. Very low power density leads to low probability of signal detection and adds security for all the layers of the communication stack. Very low power density is obtained through radio regulation emission masks; UWB systems are suitable for coexistence with already deployed narrow-band systems.
Wi-Fi Home Networking Just the Steps For Dummies is the way to go if you’re ready to go wireless and install your own wireless home network. The book’s easy-to-navigate design features two columns, with numbered step-by-step instructions on one side and corresponding illustrations, screen shots, or photos on the other. There’s no fluff, just the vital stuff—Just The Steps you need to get up to speed fast. This guide covers common networking tasks, including:
Setting up wireless access points and configuring your network
Adding wireless devices to your network
Activating Wi-Fi Security, managing firewalls, and preventing unauthorized network users
You don’t have to leave WI-Fi behind when you leave home; this practical reference tells you how to find public hotspots where you can use your Wi-Fi-equipped portable computer and how to network wirelessly with your pocket PC. It covers practical applications like creating a network bridge or adding wireless network storage, plus fun ways to use your tech toys to integrate and enhance your digital life, such as:
Setting up a wireless media center so you can use a computer for streaming media, as a TV tuner, as a digital video recorder, or to integrate with your TV and home entertainment system
Turning your pocket PC into a remote control
Adding a wireless camera to your network
Even if your current system with its cables, wires, and convoluted connections works, it’s time to cut the cord. Going wireless gives you many advantages and new options. So take the first step—get this book.
– Fun projects and valuable content join forces to enable readers to turn their wireless home network into a high-performance wireless infrastructure capable of entertainment networking and even home automation
– Step-by-step instructions help readers find, buy, and install the latest and greatest wireless equipment
– The authors are home tech gurus and offer detailed discussion on the next-generation wireless gear that will move the wireless LAN beyond computers and into telephony, entertainment, home automation/control, and even automotive networking
– The number of wireless LAN users in North America is expected to grow from 4.2 million current users to more than 31 million by 2007