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Topic Area: Telcommunications/Wireless
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Displaying records 41 to 50 of 86 records.
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41. Non-Coherent Amplify-and-Forward Generalized Likelihood Ratio Test Receiver
Topic: Telcommunications/Wireless
Published: 7/30/2010
Author: Michael R Souryal
Abstract: This paper proposes a simple non-coherent amplify-and-forward receiver for the relay channel and evaluates its diversity performance for Rayleigh fading channels. We use the generalized likelihood ratio test to obtain the decision rule in closed form ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905550

42. A Comprehensive Spatial-Temporal Channel Propagation Model for the Ultra-Wideband Spectrum 2-8 Ghz.
Topic: Telcommunications/Wireless
Published: 6/7/2010
Author: Camillo A Gentile
Abstract: Despite the potential for high-speed communications, stringent regulatory mandates on Ultra-Wideband (UWB) emission have hindered its commercial success. By combining resolvable UWB multipath from different directions, Multiple-Input Multiple-Output ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900928

43. Statistical modeling of short term fading and shadowing in Ultra-Wideband systems
Topic: Telcommunications/Wireless
Published: 5/10/2010
Author: Camillo A Gentile
Abstract: Statistical modeling of Ultra-Wideband (UWB) signals is undertaken to examine the existence of short term fading and shadowing. Based on the data collected from multiple locations and 4 different sites using a single transmitter and a 96-element rec ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902531

44. ZigBee-Wireless Mesh Networks for Building Automation and Control
Topic: Telcommunications/Wireless
Published: 4/12/2010
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: ZigBee is a wireless technology developed as an open global standard to address the unique needs of low-cost low-power wireless sensor networks. This standard takes full advantages of the IEEE 802.15.4 physical radio specification and operates in unl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905069

45. How often and how long should a cognitive radio sense the spectrum?
Topic: Telcommunications/Wireless
Published: 4/7/2010
Author: Nader Moayeri
Abstract: This paper presents a Bayesian framework and a pricing structure for a secondary wireless user that opportunistically uses a RF channel belonging to a network of N primary users. The secondary user operates in a time-slotted fashion, where each time ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904316

46. SER Performance Analysis for Physical Layer Network Coding over AWGN Channel
Topic: Telcommunications/Wireless
Published: 12/3/2009
Authors: Yi Qian, Kejie Lu, Shengli Fu, Hsiao-Hwa Chen
Abstract: While original network coding is proposed over data link layer, recent work suggests that it can also be implemented on physical layer. In fact it is more natural for wireless networks because of its omnidirectional transmission. In this paper, we in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900953

47. Robust Noise Filtering in Frequency-Invariant Beamforming with Uniform Circular Arrays
Topic: Telcommunications/Wireless
Published: 11/30/2009
Author: Camillo A Gentile
Abstract: Accurate signal measurement in the spatial-temporal domain is critical, amongst other applications, to the commercial success of UWB-MIMO communication systems and UWB standalone location systems. Antenna arrays can measure the spatial dimension of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902424

48. EDA Performance and Clock Synchronization Over a Wireless Network: Analysis, Experimentation and Application to Semiconductor Manufacturing
Topic: Telcommunications/Wireless
Published: 11/24/2009
Authors: Dhananjay Anand, Deepak Sharma, YaShian Li-Baboud, James Moyne
Abstract: Shrinking process tolerances due to decreasing device sizes and increasing chip complexity in semiconductor manufacturing are motivating efforts to improve methods of Equipment Data Acquisition (EDA). Prior work shows that the lack of precise tim ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903566

49. Improving security information gathering with IEEE 802.21 to optimize handover performance
Topic: Telcommunications/Wireless
Published: 10/30/2009
Authors: Antonio Izquierdo Manzanares, Nada T Golmie
Abstract: In mobile networks, authentication is a time-consuming operation that needs to be shortened in order to provide seamless handovers. Furthermore, the time required for negotiating security parameters and obtaining security policies increases the impor ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901175

50. Correlated Photon Pair Generation by Dual-Element PPKTP Waveguide over GHz repetition rate
Topic: Telcommunications/Wireless
Published: 10/11/2009
Authors: Xiao Tang, Lijun Ma, Oliver T Slattery
Abstract: A compact scheme for high-speed frequency doubling and down-conversion on a single dual-element PPKTP waveguide is investigated. Optimal temperature selection for the entire waveguide is achieved and coincidence is observed. A pulsed pump scheme is u ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902767



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