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What is Wimax, Cdma, Voip, Mimo, Ofdm, SDR and UWB ?

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ahmedmaher40

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Can anybody help me ?

Can anyone tell me in abrief ( just the idea ) the meaning of
1-Wimax
2-Cdma and Wcdma and Cdma2000
3-Voip
4-Mimo
5-Ofdm
6-SDR and UWB

and anyother topics related about this fields because this will help me alot
please do not late on replay
Thanks in advance

N.B: i don't need books or tutorials ..just wanna a brief idea
 

hossam.algewely

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Re: Can anybody help me ?

that's a lot of subjects, i can reply you concerning VoIP:
VoIP is to carry out normal voice signal over a data network working with TCP/IP protocol, the idea is to use DSP to convert analog voice into digital signal , then use protocols like RTP to encapsulate digital signal into packets , then use protocols like H.323 to establish session to transfer the call , and use many queuing , routing , policies and many other techniques to deliver the voice with the same quality as telephony that is Quality of Service QoS
if you need any resources about this subject don't hesitate to ask , i have tons of document and tutorials
 

ahmedmaher40

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Re: Can anybody help me ?

thank you alot for helping me
please anyone have information about any subject of the above post it
this will help me alot
 

sinip

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Re: Can anybody help me ?

ahmedmaher40 said:
thank you alot for helping me
please anyone have information about any subject of the above post it
this will help me alot
In all this time you spent waiting for the answers, you could have gone to google and find everything on your own...
 

sony205

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Re: Can anybody help me ?

this is short introduction to OFDM. I hope you like it
 

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