This book has a collection of chapters written by eminent researchers in diverse areas of ad hoc networks, spanning mobile and vehicular ad hoc networks, static, mobile and underwater sensor networks as well as cognitive radio networks. The chapters cover a wide range of theoretical as well as practical issues in ad hoc networks. The chapters present the latest advancement in the above areas with respect to the communication paradigms and protocols, network topology, coverage and tracking, mobility models and performance analysis. Though written by different authors, the chapters have been meticulously reviewed, edited and organized to present a coherent flow and transition from one chapter to another. The book could be adopted as a reference book for any graduate-level course in wireless networks and it can be used for advanced research in ad hoc networks as well. In addition to discussing efficient solutions for various problems in ad hoc networks, the chapters present several open problems and potential solution strategies and approaches that can be further worked on by interested researchers. Each chapter (featuring a sub area of ad hoc network) is written in such a way that it presents an adequate introduction to the topic and the relevant background work. The book is edited in such a way that it is self-contained and the topic presented can be easily understood with minimal background knowledge in the area of ad hoc networks. At the same time, the chapters address complex research problems that have been hitherto not comprehensively presented in any book on ad hoc networks.