نتایج جستجو برای: wireless communications

تعداد نتایج: 173474  

2003
Yingbo Hua Yan Mei Yu Chang

We first provide an overview of some of the latest developments in wireless communications using multiple transmitters and multiple receivers. We point out the importance of SNR control in fast random fading environment. For applications where large antenna arrays are not suitable, we introduce the concept of wireless antennas or wireless relays that are distributed between a source and a desti...

1999
MUGO KIBATI Sharon Eisner Gillett Richard de Neufville

The demand for data communications in Kenya is growing at a steady rate. Information technologies have become ubiquitous all over the world, including in developing countries like Kenya. Already, educational, health and trade networks connecting remote regions to the rest of the world are taking advantage of the Internet phenomenon. Banks, insurance and financial services firms, and other corpo...

2006
Ezequiel T. Coelho Paulo Carvalhal Manuel J. Ferreira Luís F. F. Silva Heitor Almeida José A. Afonso Cristina Santos

A short range wireless network platform, based on Bluetooth technology and on a Round Robin scheduling is presented. The objective is to build an application independent platform, to support a distributed sensing and actuation control system, which will be used in an Unmanned Aerial Vehicle (UAV). This platform provides the advantages of wireless communications while assuring low weight, small ...

2007
Anthony C. Boucouvalas Thushara Abhayapala Eric Moulines Alagan Anpalagan Richard J. Kozick Chia-Chin Chong Sergios Theodoridis Weihua Zhuang Aaron Gulliver Tomoaki Ohtsuki

This is a special issue published in volume 2005 of " EURASIP Journal on Wireless Communications and Networking. " All articles are open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Seamless integration of the technology into products which a...

Journal: :IEICE Transactions 2007
Charoen Tangtrongbenchasil Yoichi Hamada Toshihiro Kato Koji Nonaka

SUMMARY Optical wireless communications is a research topic of extreme interest since it offers high data rate (Gbps data rate), security, and RF interference immunity. However, optical wireless communications places severe restrictions on the communications paths; they must be direct beam connections. To increase the number of users and link robustness, optical wireless communications must be ...

2012
Yeheskel Bar-Ness

SINGLE-CARRIER FREQUENCY DOMAIN EQUALIZATION USING SUBBAND DECOMPOSITION FOR OPTICAL WIRELESS COMMUNICATIONS by Di Mu Optical wireless communication is intended to be applied into indoor and visual distance high-rate data transmission, which is complementary to radio frequency communications. There are specific problems and requirements in optical wireless communications compared with radio fre...

Journal: :IEEE Wireless Commun. 2002
Jalal Al-Muhtadi M. Dennis Mickunas Roy H. Campbell

Wireless communications are advancing rapidly. We are currently on the verge of a new revolutionary advancement in wireless data communications: the third generation of mobile telecommunications. 3G promises to converge mobile technology with Internet connectivity. Wireless data, multimedia applications, and integrated services will be among the major driving forces behind 3G. While wireless co...

2012
Gordhan Das Menghwar Akhtar Ali Jalbani Mukhtiar Memon Mansoor Hyder

This Wireless channel while offering independence of movement also introduces un-reliability in the messages received at the destination. Various strategies have been introduced so far to mitigate the effects of the channel on the message received. In this paper, we give an introductory overview of cooperative communications, a new trend in this field of wireless Communications where the transm...

2005
JAMES “JOE” MCCARRY FIROOZ KHOSRAVIYANI

Geometrical statistical methods are used to study needles floating in a weightless environment. This is a three dimensional analog of the classical Buffon Needle problem in two dimensions.

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