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mobile communication project on matlab

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cdma project on fpga

as stated in the uploaded files the Integration part is held on Physical Bits i.e (-1,+1) & after, there's a decision unit which compares the result to reference value;deciding whether it's 1 or 0 user data bit
is that what u mean ??

Hany Hamed
 

block diagram of cdma network

Salam han00oo,

I just wanted to know some information

have you implemented both forward and reverse channel or a single channel only?

Have you implemented a multiple user system or u just maid it as a single user?

How many Spartan 3 Kits did it take u to do it?

regards,
 

cdma model

hi
as shown in figure in start of postings you can see that data coming from 3 different sources & combined in the transmitter unit then passed to receiver via Real channel (not a modeled in FPGA) thus taking 2 Spartan-3 Kits.

salam,

Hany Hamed
 

cdma fpga vhdl

In order for the multiplication principles of CDMA to hold true, bipolar coding is used with the assumed physical values of + 1 and -1. with bipolar coding, logical "1" bits are represented by positive "+1" physical signals, and logical "0" bits are represented by negative " -1" physical signals,and this is also true for Integration part .
 

cdma-project report

I understand that CDMA principle requires analog integration at the receiver end. How did u perform the integration operation in FPGA?

M
 

cdma project making details

dear hanOOoo, could you please tell how you implemented adder in FPGA?
 

cdma in fpga

as i mentioned before the main idea of this project is to change the regular Analog adder with Digital one,& thus the technique I've used is Little bit different from other CDMA types mainly in the adder & integration & here's how it works.


first convert the binary signal to physical signal ,add the physical signals-bitwise- the result would be a multilevel digital signal(number of levels=number of signals+1) -or- for simpilicity we can consider it a regular decimal sequance
the next step is encoding,i encoded the result multilevel signal to a normal digital signal(0.1)
ofcourse the encoded signal has a larger BW but it can be used instead of normal analog adder implemented in digital Design.
 

fpga project reports

hi ,
hw did u model channel model.
Is it Ricean or Raleigh .......
I didn't see any packet or frame detection.
Nor a Equalizer ,nor a Synchornisation circuits like
coarse synchronisation(or symbol boundary detection),
coarse frequency offset detection,
fine time and frequency synchronisation,
there is no channel estimation also.

bye,
Gopi.

Added after 35 seconds:

hi ,
hw did u model channel model.
Is it Ricean or Raleigh .......
I didn't see any packet or frame detection.
Nor a Equalizer ,nor a Synchornisation circuits like
coarse synchronisation(or symbol boundary detection),
coarse frequency offset detection,
fine time and frequency synchronisation,
there is no channel estimation also.

bye
 

cdma synchronisation vhdl

u say u didn't see channel model but if u can SEE the above posts u would find that it's a real channel & NO need for channel models here,
the synchronization u didn't SEE was in pilot detection techniques .... do u SEE people post much details then what i did
the question now is for u ..do u think couple of FPGA boards connected through direct meduim need somthing more of what u said u couldn't SEE ??!!!
by the way is that way of talking u use is NORMAL ??!!!
 

simulink integration and dump

Hello m a Student Of Computer Engineering..
and we are thinking to our final year Project...read alll the things and i m very much interested in it..
plz if u want to give me this
ednan
 

CDMA project on FPGA

i am also working on this same topic .i have finish my matlab programming on that. & trying to same work by vhdl coding but confused in the addition part.please help me
 

CDMA project on FPGA

hi i am facing so much difficulties in same project. can mr.han00oo help me?please..............please send me details of your project. i have taken same project in my post graduation pro gramme.

Added after 45 minutes:

Part 1 : introduction to :Spread spectrum,FPGA spartan-3 & VHDL
please send me this document on my mail aapatel374@yahoo.co.in as soon as possible.

Added after 5 minutes:

send me Part 2 Tx also

Added after 4 minutes:

also send me final rx part also
 

Re: CDMA project on FPGA

hi guys i had completed this project last month success fully.if u want any help u can contact me....
 

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