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What is the difference between cdma and gsm?

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electroon

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www.edaboard.com/viewtopic.php?p=651960#651960

what is the difference between cdma and gsm and wat is sos
 

ee_expert2000

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Re: cdma

the main difference is the access method.
CDMA stands for code division multiple access.
here, users share the same frequency band but in GSM, the users are associated to various frequency channels on which TDMA scheme is also used.
this scheme causes the modulation scheme to be different.
check this link:

http://www.hardwaresecrets.com/article/151
 

Lupin

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Re: cdma

Can anyone explain to me what is a Modulation Scheme?

I'm quite new to this subject.

Thanks in advance.

Lupin
 

silawi

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Re: cdma

iffi84 said:
another book
hi.... unfortunately i couldnt download those files bcoz i dont have enough points, anyway i wanna ask u what are the hot research topics regaring CDMA? i will be more than happy if u could help me ...........
 

joinfaisal

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Re: cdma

electroon said:
what is the difference between cdma and gsm and wat is sos
GSM is 2G mobile technology where TDMA and FDMA is utilized for simultanuous access of different mobile users, while CDMA is mobile communication system which is wideband and in this system each user signal is spread according to a specified code so that signals from each user can be separated at the receiver end.

This is just a basic different,, but there are number of other technical difference too....
 

IEEE2006

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Re: cdma

i need a good topic on wcdma for my project
 

ypnayak

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Re: cdma

u can refer matlab documentaion manual from mathworks.com
 

haseebcu

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Re: cdma

Consult SY1 manual. U can get a copy from the google
 

smartem

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Re: cdma

You have excelente book here. You help me very much. Thanks everybody who post the books.
 

ypnayak

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Re: cdma

the books are verygood books for reference

Added after 2 minutes:

i could not down load the books bcoz i dont have enough points can any body upload for free
 

yaseen1

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Re: cdma

Code division multiplexing
 

tkkg3000

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han00oo

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Re: cdma

hi hi hi
the most interesting book i've ever found regarding CDMA you can download from this link

https://www.edaboard.com/viewtopic.php?p=651960#651960

"How CDMA works":

Basic CDMA Principles
• Coding
• Forward and Reverse Channels
CDMA Operational Details
• Multiplexing, Forward and Reverse Power Control
CDMA Handset Architecture
CDMA Handoffs
CDMA Network Architecture
CDMA Messaging and Call Flow
Optional Topics
Wireless Multiple Access Technologies
Overview of Current Technologies
• Capacity; CDMA Overlays, Spectrum Clearing
 

haif

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cdma

THE MAJORE DIFFERENCES IS THE CAPACITY OF THE SYSTEM AND THE FREQUENCY HOPING
 

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