Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
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: Editorial Femtocell Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 367878 2 pages doi 10.1155 2010 367878 Editorial Femtocell Networks Ismail Guvenc 1 Simon Saunders 2 Ozgur Oyman 3 Holger Claussen 4 and Alan Gatherer5 1 Wireless Access Laboratory DOCOMO USA Communications Laboratories Palo Alto CA 95051 USA 2Femto Forum Guildford UK 3 Wireless Communications Laboratory Intel Corporation Santa Clara CA 95054 USA 4 Autonomous Networks and System Research Department Alcatel-Lucent Bell Labs Dublin 15 Ireland 5 CTO of Baseband SoC at Huawei Technologies Plano TX 75075 USA Correspondence should be addressed to Ismail Guvenc iguvenc@docomolabs-usa.com Received 3 May 2010 Accepted 3 May 2010 Copyright 2010 Ismail Guvenc 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. Femtocells are small cellular base stations that may be deployed in residential enterprise or outdoor areas. They utilize the available broadband connections of the users e.g. cable or DSL and typically have a coverage radius on the order of ten meters or more. Due to their various advantages recently there has been a growing interest in femtocell networks both in academia and in industry. Two of the main advantages of these networks include staggering capacity gains for next generation broadband wireless communication systems and the elimination of the dead-spots in a macrocellular network. Due to very short communication distances femtocell networks offer significantly better signal qualities compared to the current cellular networks. This makes high-quality voice communications and high data rate multimedia type of applications possible in indoor environments. Small-size coverage also implies a reasonably accurate location capability without any sophisticated positioning protocol which implies