"Recent trends in wireless communication technologies have achieved a state in which users can communicate with anybody, anywhere at anytime. Though in the beginning it was developed as a tool to cater mobile telephony but due to increase of user density and requirements of faster access of information in terms of data, video, voice etc. from remote location in mobile fashion requires new emerging trends of wireless technology. Mobile and wireless telephony has tremendously changed the way in which accessing of corporate information can be done at very faster rate from any remote location at any time by employees, partners and customers, changing the way in which corporate do business since the new millennium. The feature of recent mobile communications is that the main type of traffic is not phone calls but packet data. People obtain various types of information via wireless Internet. The rapid growth in the broadband wireless networks is due to increase demand for wireless multimedia services such as voice, data, video and development of new wireless standards. The major driver for development of mobile wireless broadband is mobility of user and continuous urge for accessing the corporate data remotely while in move. The other driving factors are the improvement in RF performance attributed to improved antenna technologies such as MIMO (Multi input Multi output) i.e. increasing frequency diversity at transmitter and receiver, reduction in sources of interference and supporting multiple frequency bands. Advancement in powerful DSP processors, using adaptive antenna technology, packet transmission and network convergence also causes of rapid growth wireless technology. Mobile Communication Systems provides a multidisciplinary perspective on the mobile telecommunications industry. The aim of the chapters is to offer both comprehensive and up-to-date surveys of recent developments and the state-of-the-art of various economical and technical aspects of mobile telecommunications markets. This book will be of interest to scholars and practitioners working in academia and the telecommunications and networking industries."