Transcript A Seminar On

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 INTRODUCTION
 WHAT IS 4G?
 EVOLUTION OF 4G
 EVOLUTION OF PROCESSORS AND DSP
TECHNOLOGY FOR 4G
 WHICH COUNTRIES HAVE 4G?
 INFRASTRUCTURE FOR 4G
 4G EVOLUTION INTO CONVERGENCE
 WiMax
 WIRELINE BANDWIDTH DEMAND PROJECTION
FOR NEXT 25 YEARS
 4G IN INDIA?
4G, the successor of 3G, will soon become the
standard for cellular wireless
The technology is currently available in some
countries but it is still being perfected
The aim is to achieve “ultra broadband speed”
– to be counted in gigabytes per second
ITU designed 4G in 2002 with the official
name “3G Long-Term Evolutions” or 3.9G
Will allow users to download a full-length
feature film within five minutes
Will also be able to stream high-definition
television and radio to hand-held devices
The basic difference between 3G and 4G is in
data transfer and signal quality
The highest download and upload speed in 3G
are 14 Mbps and 5.8 Mbps respectively
In 4G the download speed is up to 100 Mbps
for moving users and 1 Gbps for stationary users
 4G is adoption of packet switching instead of
circuit switching in voice and video calls
With packet switching, resources are only used
when there is information to be sent across
4G uses spiral multiplexing
The first commercial deployment was by Telia
Sonera and NetCom
Telia Sonera branded the network “4G”
The
modem devices on offer were
manufactured by Samsung (dongle GT-B3710)
The network infrastructure were created by
Huawei (in Oslo) and Ericsson (in Stockholm)
Except for the Scandinavian countries, a few
countries have started the 4G commercially
In the US, Sprint Nextel initiated the service
last year
Countries expected to launch 4G by this year
are Germany, Spain, China, Japan and England
There are three primary technologies that
support 4G – WiMax, LTE, and UMB
The main doubt is whether to implement
WiMax or LTE
The advantages of LTE are:
(i) Faster speed with 100 Mbps for download
and 50 Mbps for upload
(ii) It makes CDMA and GSM database moot
(iii) It offers both FDD and TDD duplexing
WiMax
technology might not achieve the
required rate in a high-density area
However, WiMax technology becomes useful
when it is bundled with IPTV
The wireless bandwidth will be roughly
3Mbps/1.5Mbps; but this is nowhere near the
+100Mbps/50Mbps that LTE promises
Has already begun the process of introducing
4G
India is among the latecomers in 3G
It is felt that by the time the implement 3G
fully, 4G technologies such as LTE will be
available commercially
It has taken three years for the government to
decide on 3G-spectrum auction policy
4G could face the same delay unless India
wants to catch up with the rest of the world