This SpringerBrief focuses on spectrum trading designs in multi-hop cognitive radio networks. It starts with the motivation for spectrum trading and the review of existing spectrum trading designs. Then, it presents a novel CRN architecture for spectrum trading considering spectrum trading's economic features and wireless nature. Under this network architecture, it extends current single-hop per-user based spectrum trading design into a multi-hop transmission opportunity based one, and further into a session based one, while having economic properties guaranteed. This SpringerBrief not only provides a good review of current spectrum trading designs, it also touches on the cutting-edge interdisciplinary spectrum trading research on disparate fields of modeling, network architecture design, optimization theories, statistics, and economic theories. Advanced-level students studying computer science, electrical and computer engineering and economics, wireless network planners, and wireless spectrum engineers will find this book a useful tool.

Welcome to Beijing. Beijing is one of the oldest and most interesting capitals in the world. A trip to Beijing is a trip to the ancient past but it is also a trip into the future. In Beijing the ancient and the modern live side-by-side with the traditional Chinese culture blending with the new global Chinese outlook. There is much to see in Beijing but also much that can be missed. The Top Ten Guide to Beijing makes sure you see and experience the very best of the city. Authors Li Sun, Yi Yang and Serena Hao Pan know the city intimately; they have grown up, gone to school and worked in Beijing. These authors bring a broad perspective that covers not only the quite pleasures of Beijing but also the excitement of a major cosmopolitan city. Whether you are visiting for a few days or a few weeks, THE TOP TEN GUIDE TO BEIJING lets you focus on the best of everything so that your experience in Beijing is a rich and rewarding one. THE TOP TEN TRAVEL GUIDES are designed to meet the needs of today's sophisticated travelers. They highlight the best the world has to offer. They are available for other cities of the world. Best wishes for an exciting visit to Beijing.