Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article 60 GHz Indoor Propagation Studies for Wireless Communications Based on a Ray-Tracing Method | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007 Article ID 73928 6 pages doi 2007 73928 Research Article 60 GHz Indoor Propagation Studies for Wireless Communications Based on a Ray-Tracing Method . Lim M. Lee R. J. Burkholder J. L. Volakis and R. J. Marhefka ElectroScience Laboratory Department of Electrical and Computer Engineering Ohio State University 1320 Kinnear Road Columbus OH 43212 USA Received 28 April 2006 Revised 13 November 2006 Accepted 13 November 2006 Recommended by Chia-Chin Chong This paper demonstrates a ray-tracing method for modeling indoor propagation channels at 60 GHz. A validation of the raytracing model with our in-house measurement is also presented. Based on the validated model the multipath channel parameter such as root mean square RMS delay spread and the fading statistics at millimeter wave frequencies are easily extracted. As such the proposed ray-tracing method can provide vital information pertaining to the fading condition in a site-specific indoor environment. Copyright 2007 . Lim et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Increasing demand of real-time high-speed applications calls for wireless local area network LAN operating in the 60 GHz band as part of the 4th generation 4G system. The 60 GHz band has spiked great interest 1-7 because of its large bandwidth 7 GHz allocated for future dense wireless local communications particularly as relates to large wireless LAN bridges and wireless high-quality video-conferencing. To establish such links wireless systems which exploit time frequency and spatial multiplexing may be required. Design of these communication systems involves space-time coding adaptive antennas and rake reception which rely strongly on the .
