Date post: | 14-Jan-2017 |
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Engineering |
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Evolution of Mobile Communication
Mohamed Reda Hassan
ContentsIntroduction0G1G2G2.5G “GPRS” Technology2.7G “EDEG” Technology3GWhat’s CDMA ?4G “ LTE“Meaning “ E” “G “ “H “Operators in Egypt?
Wireless Communication..is the transfer of
information over a distance , without the use of electrical conductors/wires
0GHeavy , expansive.Low Quality .Limited Capacity.Power Hungry
transceiver.Power Level not safe
.
1G (Frist Generation)introduced in the
1980sAnalog System.Limited to Voice
Service.No encryption.FM modulation.FDMA .It’s speed up to 2.4Kbp/s
2G • 2G technology refers to the 2nd generation which is based on
GSM.• It was launched in Finland in the year 1991. • 2G network use digital signals.• It’s data speed was up to 64kbps• High Capacity.• Low Power Consumption • TDMA Transition Technology.• Digital encryption .• Enhanced rang of services [data + voices].
Appearance of High data Rate
3GAdd Value:Voice CapacitySpeedReduced DelayServices
Security
Improved qualityVoice and more data Higher data rateQuickly Response
time Streaming ,Video
callMobile TV.• More Security
What’s CDMA?CDMA (Code-Division Multiple Access) CDMA is a form of multiplexing, which allows numerous
signals to occupy a single transmission channel, optimizing the use of available bandwidth. The technology is used in ultra-high-frequency (UHF) systems in the 800-MHZ and 1.9-GHz bands.
Researchers started even 1950.IS-95 The narrow band CDMA mobile network has been
standardized in 1993.CDMA wideband CDMA system Such as CDMA2000 in US
and Europe and WCDMA developed in 1990 and still ongoing
Long Term Evolution (LTE) 4G technology refer to or short name of fourth Generation which was started from late 2000s. Capable of providing 100Mbps – 1Gbps speed. One of the basic term used to describe 4G is :.
Mobile MultimediaAnytime AnywhereGlobal Mobility SupportIntegrated Wireless SolutionCustomized Personal Services
Also known as Mobile Broadband Everywhere.
Features Include: More Security High Speed High Capacity Low Cost Per-bit etc.
Battery uses is more
Hard to implement
Need complicated hardware
Expensive equipment required to implement next generation network.
Meaning “ E” “G “ “H “
Operators in Egypt?
Thanks'