Preliminary measurement results for cognitive spectrum sharing based on cooperative relaying

2010 ◽  
Author(s):  
Vivek Ashok Bohara ◽  
See Ho Ting
Keyword(s):  
Spectrum Sharing ◽  
Cooperative Relaying ◽  
Preliminary Measurement ◽  
Measurement Results

Methods and preliminary measurement results of liquid Li wettability

2014 ◽  
Vol 85 (2) ◽  
pp. 023506 ◽  
Author(s):  
G. Z. Zuo ◽  
J. S. Hu ◽  
J. Ren ◽  
Z. Sun ◽  
Q. X. Yang ◽  
...  
Keyword(s):  
Preliminary Measurement ◽  
Measurement Results

Design and Measurement Results for Cooperative Device to Device Communication

2017 ◽  
pp. 81-97
Author(s):  
Naveen Gupta ◽  
Vivek Ashok Bohara ◽  
Vibhutesh Kumar Singh
Keyword(s):  
Software Defined Radio ◽  
Spectrum Sharing ◽  
Signal To Noise Ratio ◽  
Base Station ◽  
D2d Communication ◽  
Direct Transmission ◽  
Signal To Noise ◽  
Measurement Results ◽  
Device To Device ◽  
Experimental Testbed

In this chapter, the authors present the simulation and measurement results for direct and single hop device-to-device (D2D) communication protocols. The measurement results will further argument the development of D2D communication and will also help in understanding some of the intricate design issues which were overlooked during theoretical or computer simulations. The measurements were taken on a proof-of-concept experimental testbed by emulating a cellular scenario in which a Base station (BS) and many D2D enabled devices coordinate and communicate with each other to select an optimum communication range, transmit parameters, etc. A testbed (Multi-carrier) was developed using Software Defined radio which incorporates the concept of Spectrum Sharing through static sub-carrier allocation to D2D user by cellular system which will eventually enhance the performance of cellular as well as D2D communication system. Our purposed and deployed protocol have shown significant improvement in received Signal to Noise Ratio (SNR) as compared to conventional direct transmission schemes.

scholarly journals Compact wooden roofs with smart vapour barrier – Pilot project experiences

2020 ◽  
Vol 172 ◽  
pp. 07010
Author(s):  
Nora Schjøth Bunkholt ◽  
Lars Gullbrekken ◽  
Stig Geving ◽  
Tore Kvande
Keyword(s):  
Moisture Content ◽  
Organic Materials ◽  
Pilot Project ◽  
Arctic Climate ◽  
The Arctic ◽  
Pilot Projects ◽  
Preliminary Measurement ◽  
Safety Risks ◽  
Measurement Results ◽  
Initial Results

Compact roofs are normally built without organic materials between the vapour barrier and the roof membrane due to moisture safety risks. However, laboratory measurements indicate that organic materials could be used provided that a smart vapour barrier (SVB) is applied at the warm face of the roof construction. The aim of this study is to investigate the moisture and temperature conditions in three full-scale flat compact wooden roofs with SVB. The roofs are part of two pilot projects located in Longyearbyen, Svalbard and Malvik, Norway. The paper presents the two projects including the premises for construction of the roofs and provides preliminary measurement results. The roofs are instrumented to measure moisture content and temperature in the wooden roof beams. The initial results from Longyearbyen show that the moisture content in the wooden beams is low and indicate that compact wooden roofs with SVB may be a solution with acceptable moisture risk in the arctic climate. The initial results from Malvik show that there might be a risk of mould growth in the roof as the built-in moisture in the wooden beams was up to 24 weight-%. In both projects, the moisture content in the beams in general was higher close to the roof underlay than close to the SVB.

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