Recently, cooperative communications have gained much attention due to the ability to explore the inherent spatial diversity in relay channels. Most of the ongoing research efforts in cooperative diversity assume frequency flat channels with perfect channel knowledge. However, in practical scenarios, e.g., broadband wireless networks, these assumptions do not apply. Frequency-selective fading and imperfect channel knowledge are indeed more realistic assumptions. The development of equalization and channel estimation algorithms play a crucial element in the design of digital receivers as their accuracy determine the overall performance. This book creates a framework for the design and development of various time and frequency domain equalization schemes for broadband cooperative communications. Furthermore, various non-coherent and channel estimation algorithms to improve the quality and reliability of wireless communication networks are proposed and analyzed. Finally, the effect of multiple antennas deployment in cooperative networks assuming different relaying techniques is investigated.
Recently, high data rate communication system like long term evolution(LTE), ultra mobile broadband (UMB) and Wimax has gained popularity. But this high data rate communication is possible if the wireless system exhibits full rank MIMO channel.However, full rank MIMO channel is not possible if the channel is highly correlated and keyhole affected. In recent years, researchers have developed a new paradigm called cooperative communication in order to get rid of the limitations of MIMO techniques. In this paper, we have analyzed the performance of DF relay with keyhole and correlation effects in MIMO relay channel. Moreover, based on MGF approach we determine the closed form expression of average SER of the MIMO DF system. Based on our analysis, it is evident that cooperative scheme outperforms the keyhole affected non cooperative scheme.
This comprehensive text/reference examines the various challenges to secure, efficient and cost-effective next-generation wireless networking. Topics and features: presents the latest advances, standards and technical challenges in a broad range of emerging wireless technologies, discusses cooperative and mesh networks, delay tolerant networks, and other next-generation networks such as LTE, examines real-world applications of vehicular communications, broadband wireless technologies, RFID technology, and energy-efficient wireless communications, introduces developments towards the 'Internet of Things' from both a communications and a service perspective, discusses the machine-to-machine communication model, important applications of wireless technologies in healthcare, and security issues in state-of-the-art networks.
Designed to help teach and understand communication systems using a classroom-tested, active learning approach. This book covers the basic concepts of signals, and analog and digital communications, to more complex simulations in communication systems. Problem-Based Learning in Communication Systems Using MATLAB and Simulink begins by introducing MATLAB and Simulink to prepare readers who are unfamiliar with these environments in order to tackle projects and exercises included in this book. Discussions on simulation of signals, filter design, sampling and reconstruction, and analog communications are covered next. The book concludes by covering advanced topics such as Viterbi decoding, OFDM and MIMO. In addition, this book contains examples of how to convert waveforms, constructed in simulation, into electric signals. It also includes problems illustrating how to complete actual wireless communications in the band near ultrasonic frequencies. A content-mapping table is included in this book to help instructors easily find lab projects for communications, wireless communications, and signal and systems classes. Special features of this book: * Discusses communication concepts and algorithms, which are explained using simulation projects, accompanied by MATLAB and Simulink * Provides step-by-step code exercises and instructions to implement execution sequences * Includes a companion website that has MATLAB and Simulink model samples and templates (link provided below) This book is intended for students and instructors, enrolled in or teaching communications systems, analog and digital communications, and wireless communication courses. Kwonhue Choi is a Professor in the Department of Information and Communication Engineering and the Principal Director of Broadband Wireless Communication (BWC) Laboratory at Yeungnam University, Korea. His research areas include efficient multiple access, diversity schemes, and cooperative communications for Fifth-Generation (5G) and beyond systems. He is the inventor of FADAC-OFDM and PSW (Properly scrambled Walsh) codes. Huaping Liu is a Professor with the School of Electrical Engineering and Computer Science at Oregon State University, USA. He was formerly a cellular network radio frequency systems engineer specializing on modeling, simulating, optimizing, and testing various digital communication systems. Dr. Liu received his PhD in Electrical Engineering at New Jersey Institute of Technology, USA.
The telecommunications scene is changing rapidly as the global information society comes closer. Modern broadband networks make it feasible to interconnect distributed systems on a worldwide basis. But to realize a global information infrastructure that uses the capabilites of broadband interconnection to the full, cooperative telecommunications service management needs particular attention. This monograph is the final report of the European RACE II Research Project PREPARE, devoted to designing and implementing prototype telecommunications management systems over real testbeds. The excellent results presented are a major contribution to advancing the state of the art in the field and have been widely acknowledged by standards bodies, manufacturers, operators, service providers, and academics.