期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2012
卷号：12
期号：9
页码：15-23
出版社：International Journal of Computer Science and Network Security
摘要：In recent years, by the rapid growth of mobile communication services and emerging broadband mobile Internet access services; the optimization of the wireless communication system has become critical. In fact, the understanding of wireless channels propagation will lay the foundation for the development of high performance and bandwidth-efficient wireless transmission technology. In wireless communication, path loss is the mean power loss that occurs between the transmitter antenna and receiver antenna. In another word, the performance of wireless communication systems is mainly governed by the wireless channel environment, therefore understanding the characterization of the mobile wireless channel can clarify why OFDM is becoming a common technology and a good choice in broadband mobile system. Depend on the environment for predicting and calculating the path loss, various models have been used by now. Some of these models are empirical and the others are analytical. In this paper, a number of the common models are reviewed and then we propose an extended model that can cover the outdoor and indoor populated environments.
关键词：Path loss; Radio propagation; Indoor radio propagation; Outdoor radio propagation; Orthogonal Frequency Division Multiplexing (OFDM); Propagation prediction for OFDM
