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In Cognitive Radio the Analysis of Bit-Error- Rate (BER) by Using PSO Algorithm

In Cognitive Radio the Analysis of Bit-Error- Rate (BER) by Using PSO Algorithm

The electromagnetic spectrum is a natural resource and hence well-organized usage of the... Read more

10 March, 2012
Tradeoff Analysis of Bit-Error-Rate (BER) in Cognitive Radio Based on Genetic Algorithm

Tradeoff Analysis of Bit-Error-Rate (BER) in Cognitive Radio Based on Genetic Algorithm

The authors know that the radio electromagnetic spectrum is a natural resource and efficient usage of the inadequate natural... Read more

1 January, 2012
A Comprehensive Study of Spectrum Sensing Techniques in Cognitive Radio

A Comprehensive Study of Spectrum Sensing Techniques in Cognitive Radio

The electromagnetic spectrum is a natural scarce resource. Radio transmission involves the use of... Read more

1 July, 2011
Modeling the Lion Attack in Cognitive Radio Networks

Modeling the Lion Attack in Cognitive Radio Networks

...is a promising technology aiming to improve the utilization of the radio electromagnetic spectrum. A cognitive radio is a smart device which runs radio applications... Read more

23 July, 2010

Graphene auditions for lead in Terahertz productions

...screening, thanks to its strong response to the terahertz region of the electromagnetic spectrum. Writing in Nature Nanotechnology, scientists from Lawrence Berkeley National Laboratory and... Read more

13 September, 2011

Nasa develops laser space communications

...such as hyperspectral imagers, which collect images across the range of the electromagnetic spectrum, and synthetic aperture radar, which allows detailed mapping of distant objects... Read more

24 August, 2011 by Tom Espiner

'Invisibility cloak' slows down light

...Such a cloak would only work for one specific frequency in the electromagnetic spectrum," said Perczel. "We've proven that invisibility can be achieved without... Read more

10 August, 2011 by Tom Espiner

Avanti prepares 10Mbps satellite broadband for Europe

...chief executive David Williams. The Ka-band, a microwave band of the electromagnetic spectrum, allows Avanti to transmit more data, resulting in a lower cost... Read more

24 November, 2010 by Ben Woods
Starmad 3.2.0

Starmad 3.2.0

...Interplanetary Transfer, and Delta-V Budget; Observation Payload Analysis, in terms of Electromagnetic Spectrum, Optics and Sizing; Spacecraft Subsystems Design, considering Attitude Control, Communications, Power... Read more

1 May, 2012
Touch Waves 2.6

Touch Waves 2.6

...spherical mirror, Geometric aberration,Chromatic aberration,Visible spectrum, Electromagnetic wave in 3D,Electromagnetic spectrum, Absorption and emission of photon, Types of polarization, Types of polarization... Read more

31 March, 2012
Implementing Opportunistic Spectrum Access in LTE-Advanced

Implementing Opportunistic Spectrum Access in LTE-Advanced

...A may become futile without a better management of scarce and overcrowded electromagnetic spectrum. In this sense, Cognitive Radio (CR) has been proposed as a... Read more

9 March, 2012
Ghost Hunter M2 2.7

Ghost Hunter M2 2.7

...It is believed that paranormal manifestations cause energy disturbances across the entire electromagnetic spectrum. *Available for iPhone 3GS, iPhone 4, and iPad 2G *iOS 4... Read more

27 October, 2011
Muddles 1.1

Muddles 1.1

...Zodiacs, Binary Sequencing, Brail, Geologic Timeline, Metric Prefix Multipliers, Pi, Atmospheric Structure, Electromagnetic Spectrum, Stages of Mitosis, Colors of the Rainbow, Roman Numerals, The English... Read more

23 October, 2011
myConvert - unit converter 2.5

myConvert - unit converter 2.5

...Stockings (Women), Dress (Juniors), Bra - band, Bra - cup, Hats, Rings, Electric current, Electromagnetic spectrum, Radiation absorbed, Moment of Inertia, Viscosity (dynamic), Viscosity (kinematic), Metal Hardness... Read more

10 September, 2011
myConvert Lite - unit converter 2.5

myConvert Lite - unit converter 2.5

...Stockings (Women), Dress (Juniors), Bra - band, Bra - cup, Hats, Rings, Electric current, Electromagnetic spectrum, Radiation absorbed, Moment of Inertia, Viscosity (dynamic), Viscosity (kinematic), Metal Hardness... Read more

10 September, 2011

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