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Please help me providing me with some sources of information about theses topics ...

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new_tornado

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Graduation project urgent help ( communications field)

I am working on my graduation project and to be specific I am interested in the field of communications ... I am looking for any sources to new ways of modulation used in wireless communications or a way to increase data rates in telecommunications ... can you help me in this please ? thank you so much in advance :)
 
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Some ideas to start your documentation search...
Wikipedia: look up some common wireless standards: 802.11, 3G and 4G... figure out what their modulation formats consist of
Google Scholar: look up articles/papers on the various modulation formats you discover while examining the high-level communication standards
IEEE: if you are a member, or can get access via your school, there are TONS of articles in the communications group about modulation standards, and topics for expanding their capabilities.

That's where I'd start
 

Re: Graduation project urgent help ( communications field)

Off Topic:

Please ask for me if any of your professors have already heard how to build a DSB-SC (Double Sideband Suppressed Carrier) demodulator based on a simple analog conventional PLL (Phase Locked Loop). Obviously it could be done digitally as well.

I am asking on this, because on the internet I found out that till our days the 'only' PLL used for DSB-SC detector is known as Costas Loop. And it wasn't possible to be implemented in practice till it was done digitally (since it is not well suited for analog devices).

On the other hand, since very long time I built (first as a thesis then I used its concept in my private wireless links) my first DSB-SC demodulator using CD4046 (for IF 455 KHz). The main idea was to make it simple and low-cost so that even an amateur can afford to build it. Obviously it can also detect any AM index; from m=0 to m=infinity (infinity means the carrier is suppresed).

But I am really surprised that no one talks about it!
Is it possible that no one else did it too?!

You may know the answer for me :)
Thank you in advance.

Kerim
 
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enjunear said:
Some ideas to start your documentation search...
Wikipedia: look up some common wireless standards: 802.11, 3G and 4G... figure out what their modulation formats consist of
Google Scholar: look up articles/papers on the various modulation formats you discover while examining the high-level communication standards
IEEE: if you are a member, or can get access via your school, there are TONS of articles in the communications group about modulation standards, and topics for expanding their capabilities.

That's where I'd start
Click to expand...


Thank you so much for your reply I'll follow these as a starting guidelines for me ... but do you think it's a good track to go through for my graduation project or should I go for something else ? ... your ideas will be highly appreciated ... Thanks again :)

---------- Post added at 17:53 ---------- Previous post was at 17:50 ----------
KerimF said:
Off Topic:

Please ask for me if any of your professors have already heard how to build a DSB-SC (Double Sideband Suppressed Carrier) demodulator based on a simple analog conventional PLL (Phase Locked Loop). Obviously it could be done digitally as well.

I am asking on this, because on the internet I found out that till our days the 'only' PLL used for DSB-SC detector is known as Costas Loop. And it wasn't possible to be implemented in practice till it was done digitally (since it is not well suited for analog devices).

On the other hand, since very long time I built (first as a thesis then I used its concept in my private wireless links) my first DSB-SC demodulator using CD4046 (for IF 455 KHz). The main idea was to make it simple and low-cost so that even an amateur can afford to build it. Obviously it can also detect any AM index; from m=0 to m=infinity (infinity means the carrier is suppresed).

But I am really surprised that no one talks about it!
Is it possible that no one else did it too?!

You may know the answer for me :)
Thank you in advance.

Kerim
Click to expand...


Actually I don't think that no one did too ... let do some search for it too and ask my professors and get back to you ... and you are welcome :)
 

new_tornado said:
Actually I don't think that no one did too ... let do some search for it too and ask my professors and get back to you ... and you are welcome :)
Click to expand...

Thank you. I hope you will be able to answer me no matter if the reply is positive or negative. In both cases you will help me be out of my confusion.

Then if it happens you will find out it is still a novel idea and you are allowed to present it as a thesis project, it will be my pleasure to help you surprise many around you by presenting it as a real solution. Obviously the concept will be simulated first (I use the free simulator LTspice). Now its theory is mostly analog (no firmware) but you may be able to update it and get the digital version of it.
 

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