The ever-growing demand for multimedia services, high mobility, and global connectivity has resulted in recent years in an explosion of new technologies for wireless communication systems. All components of a wireless communication system ranging from digital modulation schemes over channel coding techniques up to higher layer protocols are more or less influenced by the characteristics of the mobile radio channel. A thorough understanding of the mobile radio channel is therefore crucial for the development, performance optimization, and testing of present as well as next-generation mobile radio systems. This is one of the reasons why exploring the mobile radio channel has always been a key research topic from the very beginning of mobile communications till today. Currently, the research on mobile radio channels involves a variety of challenging topics such as the modeling of car-to-car channels, MIMO channels, cooperative channels, satellite channels, and ultra-wideband channels, only to name a few. The objective of this special issue is to give an overview of the state-of-the-art research in the area of mobile radio channels.

We welcome authors to submit their original research articles or comprehensive reviews/tutorials focusing on the modeling and simulation of mobile radio channels. Potential topics of interest include, but are not limited to:

• Channel models for 3G and 4G wireless communication systems
• Channel models for multiple-input multiple-output (MIMO) systems
• Advances in indoor, outdoor, and indoor-to-outdoor channel modeling
• Channel models for mobile-to-mobile cooperative communication systems
• Channel models for vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), and vehicle-to-person (V2P) wireless communications
• Ultra-wideband channels
• Channel models for satellite communications
• Channel models for underwater wireless communication networks
• Channel models for wireless sensor networks (WSNs)
• Advanced ray tracing techniques
• Channel sounding techniques
• Propagation and path loss models
• High-performance and efficient simulation techniques for mobile radio channels
• Characterization of stationary and nonstationary mobile radio channels
• Modeling and analysis of nonisotropic scattering environments
• Hardware and software channel simulators
• Information theoretic aspects of mobile radio channels
• Characterization and modeling of real-world mobile radio channels
• Channel parameter estimation techniques
• Estimation and extraction of channel state information (CSI)
• Channel capacity analysis

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/mse/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/ according to the following timetable: