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We demonstrate the performance of a low cost, 8×10 Gb/s tunable receiver with -26 dBm sensitivity at 1E-3 BER for each channel in a 8×100 GHz channel TWDM testbed for use in TWDM-PON applications.
The Global Positioning System (GPS) has been the most popular choice for positioning in open-sky environments, but its difficulty in dealing with signal blockage from buildings, trees and the like has limited its operation in urban environments, underground and especially indoors. Recent advancements in location technology have led to the development of Assisted GPS (A-GPS) technology that can operate...
We consider the simplest IEEE 802.11 WLAN networks for which analytical models are available and seek to provide an experimental validation of these models. Our experiments include the following cases: (i) two nodes with saturated queues, sending fixed-length UDP packets to each other, and (ii) a TCP-controlled transfer between two nodes. Our experiments are based entirely on Aruba AP-70 access points...
Advances in indoor short-range wireless communication technology and the proliferation of lightweight handheld devices with built-in high-speed radio access have made wireless LAN deployments increasingly common and the indoor wireless LANs are emerging as an ideal solution for providing high speed connectivity for in-building communications operating in 2 GHz frequency band. The proliferation of...
Space diversity technique is an attractive solution for improving quality in wireless links. The objectives of this paper are to investigate the impact of bit error rate on the number of users and the SNR for space time block coded MIMO Rayleigh fading channels. Diversity is a technique used to combat multipath-fading. Space Diversity is a technique in which multiple numbers of antennas are used at...
Web services framework has evolved as an emerging distributed middleware technology that uses a simple XML-based protocol to allow heterogeneous applications to exchange data across the Web. It provides a loose coupled and implementation neutral infrastructure for distributed applications. On the other hand, multi-agent autonomic architectures have evolved to provide self-management in the software...
This century is experiencing an unprecedented growth in the number of mobile wireless users, applications, and wireless network access technologies. The future technology will provide communications and computing, where the users have network access, anytime, anywhere, and these applications shall be location-sensitive. To realize this vision, the network connectivity of private networks is required...
A coherent detection of OFDM signals (Orthogonal Frequency Division Multiplexing) allows good performances in severely time-dispersive channels. However, coherent receivers require good channel estimates, a difficult task when the channel impulse response is long and/or when space diversity techniques are employed. Usually, the channel estimates are obtained with the help of pilot symbols multiplexed...
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