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This module describes the aims and motivation for the course.

We aim to:

  • Develop a theory which can characterize the behavior of real-world Random Signals and Processes ;
  • Use standard Probability Theory for this.
Random signal theory is important for
  • Analysis of signals;
  • Inference of underlying system parameters from noisy observed data;
  • Design of optimal systems (digital and analogue signal recovery, signal classification, estimation ...);
  • Predicting system performance (error-rates, signal-to-noise ratios, ...).

Speech signals

Use probability theory to characterize that some sequences of vowels and consonants are more likely than others, somewaveforms more likely than others for a given vowel or consonant. Please see .

Use this to achieve: speech recognition, speech coding, speech enhancement, ...

Four utterances of the vowel sound 'Aah'.

Digital communications

Characterize the properties of the digital data source (mobile phone, digital television transmitter, ...), characterize thenoise/distortions present in the transmission channel. Please see .

Use this to achieve: accurate regeneration of the digital signal at the receiver, analysis of the channelcharacteristics ...

Digital data stream from a noisy communications Channel.

Probability theory is used to give a mathematical description of the behavior of real-world systems which involve elements of randomness . Such a system might be as simple as a coin-flipping experiment, in which we are interested in whether'Heads' or 'Tails' is the outcome, or it might be more complex, as in the study of random errors in a coded digital data stream(e.g. a CD recording or a digital mobile phone).

The basics of probability theory should be familiar from the IB Probability and Statistics course. Here we summarize the mainresults from that course and develop them into a framework that can encompass random signals and processes.

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
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 ?
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
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.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
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
what is system testing
what is the application of nanotechnology?
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
anybody can imagine what will be happen after 100 years from now in nano tech world
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
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Mueller Reply
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Source:  OpenStax, Random processes. OpenStax CNX. Jan 22, 2004 Download for free at http://cnx.org/content/col10204/1.3
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