This is an unusual brief non technical introduction designed for newbies. In this presentation you’ll learn What is 3G WCDMA?

1. An Idiot’s Guide to
3G WCDMA OPTIMIZATION
01 Basic Introduction
This is an unusual brief non technical
introduction. In this presentation you’ll
learn What is 3G WCDMA?
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com
By Sanchu

2. 
Patience to read this document. 

No Technical knowledge needed at all.
PREREQUISITES
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com

3. 
3G, short for Third Generation, is the third generation of
mobile telecommunications technology; Next to GSM(2G)
and prior to LTE(4G). But there are many sub divisions or
technical standards in 3G networks.

WCDMA (Wideband Code Division Multiple Access) is an
air interface standard or technology found in many 3G
mobile telecommunications networks.
WHAT IS 3G? WHAT IS WCDMA?
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com

4. 
Of course, 3G and WCDMA are different.
ARE 3G AND WCDMA DIFFERENT?
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com

5. 
The mobile technologies which satisfy some standards called
IMT-2000 standards can be called 3G.

IMT 2000 standards were defined by International
Telecommunication Union (ITU).

And 3G technology standards were developed as a result of 3rd
Generation Partnership Project(3GPP).

There are many cellular systems or technologies which satisfy
the IMT-2000 come under 3G. For example EDGE, CDMA
2000, UMTS, DECT, HSPA ……… many more.

Clear?.... Go ahead.
WHAT IS 3G EXACTLY?
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com

6. 
WCDMA is the short form of Wideband Code Division Multiple
Access.

Multiple Access is handling several users or accesses at a time;
together.

CDMA is a method used to handle several users at a time with
different codes. You just imagine the code as a password.
Now different mobiles are given different passwords and their
data are encrypted with their given codes.

So what is that W? It’s a short form of wideband means the
larger frequency bandwidth. So you can transfer more data…
means more speed…. Good. Isn't it?
THEN WHAT IS WCDMA?
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com

7. 
3G WCDMA is number of mobile telecommunication
standards which satisfy IMT 2000 standards and use WCDMA.

What are they? UMTS(R99), HSDPA, HSUPA, HSPA+.

Clear?.... Move next…
FINALLY THE CAT IS OUT OF THE
BOX. 3G WCDMA IS ….
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com

8. UMTS/R99
HSPA
HSDPA/HSUPA
HSPA+
Max. DL speed / bps
384 k
14 M
28 M…moving on
Max. UL speed / bps
128 k
5.76 M
11 M…moving on
Latency – approx. RTT
150 ms
100 ms
50 ms
3GPP Release
Rel 99 / 4
Rel 5 HSDPA
Rel 6 HSUPA
Rel 7…. Yet developing
New releases
Access Technique
CDMA
CDMA
CDMA
Modulation Technique
DL – QPSK
UL – BPSK
DL – 16 QAM
UL – QPSK/BPSK
DL – 64 QAM
UL – 16 QAM
Approx. years of initial roll out
2003/4
2005/6 HSDPA
2007/8 HSUPA
2008/9
3G WCDMA STANDARDS AT A
GLANCE…
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com

9. 
In the next Chapter we will learn the Technical
introduction for the basic stuffs we’ve learnt
today.

So get prepared yourself for the Technical
Introduction.
WHAT NEXT?
©Sanchuthan Ganeshalingam 2013 - sanchu31@gmail.com