This book introduces the reliability technology of complex software systems. In this book, the authors first introduce the basic concepts of complex software systems, then the authors analyze the principles that may cause the failure of complex software systems, and the authors also present how to establish the proper reliability models. The authors introduce the architecture-based and data-based reliability assessment methods, model-based testing methods, and human factors related to comp...

The book focuses on the advanced mmWave/Sub-terahertz ultra-massive MIMO wireless communications, which are regarded as a promising paradigm shift in future 5G beyond and even 6G. This is achieved by providing a comprehensive review of the rapidly developing field of massive MIMO communication, in-depth discussions on the impact of extremely large-scale antenna array, and detailed numerical simulation results on our proposed schemes. Several case studies are given after introducing basic c...