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Workshop overview

According to the International Association for the Wireless Industry CTIA, there were 180 million mobile phone subscribers in the U.S. atthe end of 2004. Worldwide, there will soon be 2 billion subscribers. From these figures it is not difficult to see thatwireless communication, a technology that is based on the interplay of many sciences, is revolutionizing the way we communicate. In thisworkshop, three experts in wireless communication will discuss mathematical, technical, algorithmic, and protocol issues that madewireless communication possible and that will enable future wireless systems with more throughput, wider coverage, higher reliability, andnew applications.

Remark: This workshop was held on April 18, 2005 as part of the Computational Sciences Lecture Series (CSLS) at the University of Wisconsin-Madison.

Approximately universal codes over slow fading wireless channels

By Prof. Pramod Viswanath (University of Illinois at Urbana-Champaign, USA)

Slides of talk [PDF] | Video [WMV]

ABSTRACT: The tradeoff between data rate and reliability of reception is a fundamental issue in theory and practice of communication. Inthis talk, we try to understand the nature of this tradeoff in a slow fading wireless channel. In particular, we will precisely characterizecodes that optimally tradeoff these two quantities for every statistical characterization of the wireless channel. Thischaracterization is then used to construct new coding schemes as well as to show optimality of several schemes proposed in the space-timecoding literature.

Quantum computing and cellular phones

Prof. Rob Calderbank (Princeton University, USA)

Slides of talk [PDF] | Video [WMV] | Video [MPEG1] | Video [Other MPEG formats]

ABSTRACT: Multiple antennas are transforming the rate, reliability andreach of wireless systems. Quantum computers are calling into question the security of cryptosystems where security rests on the presumedintractability of factoring. The speaker, Dr. Robert Calderbank, an AT&T Fellow and co-inventor of space-time codes, will use nineteenth century mathematics to connect these two breakthrough technologies.

Proactive design for multimedia communication systems with resource and information exchanges

By Prof. Mihaela van der Schaar (University of California at Davis, USA)

Slides of talk [PDF] | Video [WMV]

ABSTRACT: Due to their flexible and low cost infrastructure, the Internet and wireless networks are poised to enable a variety ofmultimedia applications, such as videoconferencing, emergency services, surveillance, telemedicine, remote teaching and training,augmented reality, and distributed gaming. However, these networks provide dynamically varying resources with only limited support forthe Quality of Service required by the delay-sensitive, bandwidth-intense and loss-tolerant multimedia applications . Thisvariability of resources does not significantly impact delay-insensitive applications (e.g., file transfers), but hasconsiderable consequences for multimedia applications and often leads to unsatisfactory user experience.

To address these challenges, my research is focused on investigating the theory, algorithm design, implementation, and performance analysisof realistic multimedia systems, in order to gain new insights on what basic principles underlie efficient designs, and use these insights toadvance the theory and tool-set for building optimized multimediacompression and transmission algorithms, theories and applications.

In this talk, I will discuss a new proactive algorithm and system design that fundamentally changes the non-collaborative way in whichcompeting wireless stations currently interact, by allowing them to exchange information and resources to improve the performance ofmultimedia applications.

Questions & Answers

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Computational sciences lecture series at uw-madison. OpenStax CNX. May 01, 2005 Download for free at http://cnx.org/content/col10277/1.5
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