Spectrum analyzer

Known as: Video bandwidth (spectrum analysis), Displayed average noise level, DANL 
A spectrum analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument. The primary use is… (More)
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Papers overview

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Review
2016
Review
2016
The ongoing development of mobile communication networks to support a wide range of superfast broadband services has led to… (More)
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Review
2016
Review
2016
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract -With the worldwide demand for larger bandwidth and greater mobility there is a rapid advancement of broadband wireless communications. The high capacity and low loss of optical fibre has seen its exploding growth in the last few decades in the LAN’s and WAN’s. Free space optical (FSO) wireless communication has emerged as a viable technology for bridging the gap in existing high date rate fibre network and as a temporary backbone for rapidly deployable mobile wireless communication infrastructure. Free space optical communication offers the potential to send large amount of data security over moderate distances without the expense of laying fibre optic cable. The technology is helpful where the physical connection of the transmitter and receiver locations is difficult. These robust systems which establish communication links by transmitting laser beams directly through the atmosphere, have matured to the point that mass produced models are now available. FSO system offers many features among them being the low-start up and operational cost, rapid development and high fibre-like bandwidth. It offers capacities in the range of 100Mbps to 2.5Gbps and demonstration systems report data rates as high as 160Mbps.It is a line-of-sight technology that currently enables optical transmission up to 2.5Gbps of data, voice and video communications through the air, allowing optical connectivity without deploying fibre-optic cables or securing spectrum licences. Even though FSOs provide high security as its laser beams cannot be determined with the devices like spectrum analyser or RF meters, there are some challenges (atmospheric turbulence, scintillation, object sway) in the implementation of it. 
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2015
2015
We propose Snoopy, a system that can translate one's mobile phone or tablet into a low-cost, yet effective RF spectrum analyzer… (More)
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Highly Cited
2009
Highly Cited
2009
A novel analog real-time spectrum analyzer (RTSA) for the analysis of complex nonstationary signals (such as radar, security and… (More)
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Highly Cited
2008
Highly Cited
2008
The primary task in any cognitive radio (CR) network is to dynamically explore the radio spectrum and reliably determine portion… (More)
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Highly Cited
2008
Highly Cited
2008
Timothy syndrome CACNA1C 60–80% Unknown 24 Tuberous sclerosis TSC1 and TSC2 20% ~1% 110 The rates quoted in the table depend on… (More)
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Highly Cited
2006
Highly Cited
2006
This paper describes spectrum occupancy measurements performed in Chicago, IL in November 2005 and proposes long-term studies in… (More)
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2002
2002
In this letter, we demonstrate coherent optical spectrum analysis with /spl sim/70-dB dynamic range based on a swept-tuned… (More)
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Highly Cited
1993
Highly Cited
1993
One day, you will discover a new adventure and knowledge by spending more money. But when? Do you think that you need to obtain… (More)
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Highly Cited
1983