State of the art and future trends in wireless communications: advances in the physical layer

TitleState of the art and future trends in wireless communications: advances in the physical layer
Publication TypeConference Paper
Year of Publication2006
AuthorsBhargava, V. K.
Conference NameCommunication Networks and Services Research Conference, 2006. CNSR 2006. Proceedings of the 4th Annual
Pagination1 pp. -3
Date Publishedmay.
Keywords3G mobile communication, 3G wireless communication system, adaptive modulation, broadband networks, code division multiple access, cognitive radio, cooperative diversity, diversity reception, MIMO, multicarrier CDMA, multimedia based service, multimedia communication, multiple-input multiple-output technology, physical layer, spectral efficiency, system performance, technical advance, ubiquitous broadband wireless capability, ultra wideband communication, ultra wideband transmission, UWB

Summary form only given. Emerging demands for high data rate multimedia based services and high spectral efficiency are the key drives for the continued technology evolution in wireless communications. Recently, several advancements have been introduced for 3G wireless communication systems to further enhance the data rate and the system performance. However, due to the proliferation of wireless multimedia applications and services such as video teleconferencing, network gaming, and high-quality audio/video streaming, it is apparent that 3G wireless systems will be unable to comply with this ever increasing demand for broadband wireless services. The next generation wireless communication systems (namely, fourth generation (4G) or beyond 3G (B3G) systems) are expected to support much higher data rate services compared to evolving 3G systems (up to 100 Mbit/s in outdoor environments and up to 1 Gbit/s in indoor environments). The major technical challenges will be achieving high spectral efficiency and handling high frequency-selectivity due to the use of large bandwidth. Hence, it has become crucial to incorporate the recent technical advances in the physical layer into the future wireless systems. In this keynote speech, an overview of leading technological advances and future trends in the physical layer that enable truly ubiquitous broadband wireless capabilities will be presented. The topics include multiple-input multiple-output (MIMO) technologies, adaptive modulation, cooperative diversity, multicarrier CDMA, ultra wideband (UWB) transmission, and cognitive radio


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