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Prepared By

Sukruti Kaulgud

Assistant Professor (EXTC)

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What is 4G

4G is the name given to 4thgenerationtechnology. G stands for generation.

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Different Generations

1G (First Generation)

2G (Second Generation) 3G (Third Generation)

4G (Fourth Generation)

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1G (First Generation) Cont.

Advanced Mobile Phone System (AMPS) wasfirst launched by the US and is a 1G mobilesystem.

1G based on FDMA, it allows users to make voice

calls in one country.

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Problems with 1G

Poor voice quality

Poor battery life

Phone size big

No security

Frequent call drops

Limited capacity Poor handoff reliability

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2G (Second Generation)

2G or second generation 2G phones uses GlobalSystem for Mobile communication (GSM).

2G first used in early 1990s in Europe.

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2G (Second Generation) Cont.

2G digital technologies can be divided into twostandards:

TDMA (Time Division Multiple Access) GSM: Originally from Europe but used worldwide

iDEN: proprietary network used by Nextel in US

PDC: Used exclusively in Japan.

CDMA (Code Division Multiple Access) IS-95: Commonly referred as CDMA and used in US and parts of

Asia.

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3G (Third Generation)

3G networks provide the ability to transfer voicedata and non voice data (music downloads,emails and instant messaging) over the samenetwork simultaneously.

3G networks deliver broadband capacity andsupport greater number of voice and datacustomers of lower incremental cost than 2G.

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3G (Third Generation) Cont.Standards: W-CDMA: Wideband Code Division Multiple Access

CDMA 2000 EVDO: Evolution Data Optimized The idea behind is to have a single network standardinstead of the different type adopted in US Europe andAsia.

Less Complexity Faster transmission Large capacity Broadband Capabilities Allows transmission of 384 kbps for mobile systems and

upto 2 Mbps for stationary users.

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3G (Third Generation) Cont.

Increased spectrum efficiency 5MHz.

A greater number of users that can besimultaneously supported by a radio frequencybandwidth.

High data rates at lower incremental cost than

2G global roaming.

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Problems with 3G

High Bandwidth Requirement

High Spectrum licensing fees

Huge Capital

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4G (Fourth Generation)

4G is ------- MAGIC-------

Mobile Multimedia Connection

Anywhere Anytime with Anyone

Global Mobility support

Integrated Wireless solutions

Customized personal services.

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4G (Fourth Generation)

4G, the successor of 3G

4G technology or mobile communicationsystems are characterized by high speed datarates at 20 to 100 Mbps, suitable for high

resolution movies and television.

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Comparison 3G Vs 4G

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4G architecture

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Advantages of 4G

Higher bandwidth enables a range of newapplications.

Lower cost than previous generations

Faster and more reliable.

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Why 4G

Video Streaming

TV broadcast

Video calls

News

Music

Sports enhanced gaming Chat

Location Service- GPS

Life Saving - Telemedicine

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3G Vs 4G LTE

3G

Circuit switching for Voice CommunicationPacket switching for Data Communication

LTEFully IP based Infrastructure

IP Multimedia System (IMS) is used to bridgethe gap between voice calls and telephonynetwork.

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4G LTE Vs 4G WiMAX

Parameters 4G LTE 4G WiMAX

Standardized by 3GPP IEEE 802.16

Ground Technology GSM-UMTS CDMA

Frequency of Operation 800 MHz, 2.5GHz-2.7GHz

2 GHz - 8 GHz

Multiplexing Technique OFDM OFDM

Antennas MIMO MIMO

Infrastructure Full IP Based Full IP BasedLatency Less More

Spectral Efficiency Better Good

Range of Coverage More Less

Speed Good Better

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Thank You