After having a short talk with Boumester (my teacher, i think i spelt it wrong :D) he recommended to take a look on RDS and SDR.
SDR software defined radio 
RDS radio data system 
I will lay it briefly to you

SDR :
replaced the hardware with software which is abvious from its name. through the MEM technology lots of chips became cheaper and available which made it replace alot of analog equipments , in this radio specifically a microchip will replace a
filter
mixer
IF amplifier or base band(any frequency from the lowest upto the cut-off frequency)
demodulator (in the receiver part to separate the signal from the carrier)
modulator (in the transmitter part to give the signal a carrier)

it uses lots of digital signal processing (the microchip does the mathematical operations)
In some application there will be after the antenna (in the receiver part) a bandpass filter and amplifier
an amplifier is used to amplify the nanowate and microwat received signals. and it is very know to any engineer or hobbyist that a homemade antenna (say a wire) can receive signals from unknown sources (spurious emissions) therefore the bandpass filter is used to get rid off such signals and pass the wanter bandwidth, without it the amplifier will amplify all the unwanted and wanted signals.

RDS :it is the tool which shows on the digital radio screens the basestation (1oo,  99.9) also can show the time and the name of the song.

I may include further information in the next days because this is all what i know for the moment , and i have to make a decision on which subject i may write a report on the system level.

for now i guess i will go for RDS because of the time constraints. (having exams in two weeks and not prepared at all :S) .

cheers

MATLAB digital signal processing

Matlab instruction

• stem to plot diraac function
  example :
  in order to get z transform in symbols x t %same as syms x

syms
x=t;  
z=ztrans(x)

answer :
z =

z/(z - 1)^2 (from t domain to z domain)

then adding pretty(z) to print the symbolic output in a mathmatical forman

therefore :
k %if u write syms x it will give you the z transofrm of t thats why i am using syms k which also u can use syms z insteadz=ztrans(x) %answer z = (3*z*sin(4))/(z^2 - 2*cos(4)*z + 1) + (4*z*(z - cos(4)))/(z^2 - 2*cos(4)pretty(z) %answer :
     3 z
------------------- + -------------------
 2                       2
z - 2 cos(4) z + 1     z - 2 cos(4) z + 1
sin(4)           4 z (z - cos(4))

x= 3*sin(4*t) + 4*cos(4*t)
syms

Sport
is it something you practice when you are over weight and cant stand the idea of being over weight anymore ? or is it something you do to socialize with others? or is it something you do to prove you can do something? i.e as if you are good in football you will always stick to it because you are good at it and rarely try other sports, how do you consider sport ?
I consider it as a tool to overcome my lower desires, desires like being at ease and doing nothing but relaxing whether in the park under the sun or on the coach in front of my favorite show. surely relaxation is a necessaty but when it dominates everything else in ones life it creates a comfort zone that does not make a person productive and an explorer
I consider it as a test to show me what thoughts pops in my mind when am at stress, exhaust cant do it anymore in other words when i'm at the my limits.
i use it as a tool to increase in me the new habit of focus, disciplinary, speed
a muscle does not grow till you try to pick the weight u cant pick anymore when ur mind fully tells u , you cant do it , take rest
a professional ..........
to step out of my body to be an observer of my worries my own thoughts and not be restricted by it rather be the coach to run the extra mile. remember in the extra mile there wont be so much traffic
wise man once said he who conquered himself is a far greater hero than he who has defeated a thousand times a thousand men
to be continued , off to sleep

learn dutch for free
http://learndutch.elanguageschool.net/

Most folks are as happy as they make up their minds to be.

Read more:http://www.brainyquote.com/quotes/authors/a/abraham_lincoln_4.html#ixzz1GDd1GatY
ABRAHAM LINCOLN (1809-1865)


http://ritratti.wordpress.com/2009/07/14/abraham-lincoln-2/

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the mega pixel myth
http://www.kenrockwell.com/tech/mpmyth.htm
working on quartus web edition on altera microkit

draw classic
http://www.gomediazine.com/tutorials/draw-hand-graphics-tablet/

An analog signal has a continuously varying value, with infinite resolution in both time and magnitude. A nine-volt battery is an example of an analog device, in that its output voltage is not precisely 9V, changes over time, and can take any real-numbered value. Similarly, the amount of current drawn from a battery is not limited to a finite set of possible values. Analog signals are distinguishable from digital signals because the latter always take values only from a finite set of predetermined possibilities, such as the set {0V, 5V}.

must see website for lectures
http://videolectures.net/mit803f04_lewin_lec13/

Genius speaks
http://www.guardian.co.uk/theguardian/2005/feb/12/weekend7.weekend2