1G,2G, 3G, 4G ဆက္သြယ္ေရးနစ္ - TopicsExpress

1G,2G, 3G, 4G ဆက္သြယ္ေရးနစ္ ႏိႈင္းယွဥ္ျခင္း အၾကမ္းဖ်ဥ္း ရွင္းျပရံုေလးပါ။ အေသးစိတ္ကုိေတာ့ Wireless Communication နည္းပညာ စာအုပ္ေတြမွာ အၾကယ္တစ္ပြင့္ ရွင္းလင္း ထားပါတယ္။ ယခုက သာမန္လူ တစ္ေယာက္ အေနနဲ႔ အေျခခံအားျဖင့္ သိရွိရန္ ေရးသားမွ်ေဝ လိုက္ရပါတယ္။ 1G - အသံပဲ ပုိ႔ႏိုင့္၊ေရာက္ႏိုင္ပါတယ္။ အနီးစပ္ဆံုး ဥပမာ အေနနဲ႔ကေတာ့ တစ္ခ်ိန္တုန္းက ေပၚခဲ့ဖူးတဲ့ ဆယ္လူလာ ဖုန္းေတြပါ။ ဆယ္လူလာေတာင္ Analogue Signal သံုးတဲ့ ဆယ္လူ လာျဖစ္ျပီး လိုင္းက ျပတ္ေတာင္းျပတ္ေတာင္း ျဖစ္ ပါတယ္။ 2G - အသံ အျပင္၊ Data ပါ Transfer လုပ္လို႔ ရပါတယ္။ သူကေတာ့ ဒစ္ဂ်စ္တယ္ ဆယ္လူ လာ အဆင့္ေရာက္သြား ပါျပီ။ လက္ရွိ ျမန္မာျပည္က ဆက္သြယ္ေရး စနစ္မွာ အသံုးျပဳေနဆဲ ျဖစ္ပါတယ္။ GSM, CDMA, TDMA တုိ႔ ျဖစ္ပါတယ္။ 2.5G - 2G ကို အဆင့္အနည္းငယ္ ျမင့္လိုက္တာပါ။ ဒီေတာ့ Data Rate ပိုျမင့္လာတာ ထူးျခားသြားပါတယ္။ 3G - သူကေတာ့ အသံလည္းရ၊ အခ်က္အလက္လည္းရ၊ ဗီဒီယို signal ပါပုိ႔လို႔ရတဲ့ ဆက္သြယ္ေရး စနစ္ပါ။ အင္တာနက္ပါ အသံုးျပဳလို႔ ရပါတယ္။ လက္ရွိ ကမၻာမွာလည္း တြင္တြင္က်ယ္က်ယ္ အသံုးျပဳေနဆဲပါ။ 3G, W-CDMA တို႔လို ဆက္သြယ္ေရး စနစ္ ျဖစ္ပါ တယ္။ 4G - 3G ထက္ပိုအဆင့္ျမင့္သြားပါျပီ။ LTE လို႔ ဥေရာပမွာ ေခၚဆုိေပမယ့္ 4G နဲ႔ LTE မွာကြဲျပားမႈအနည္းငယ္ ရွိပါတယ္။ သုိ႔ေပမယ့္ တူတယ္လို႔ အၾကမ္းဖ်ဥ္း မွတ္ယူႏိုင္ပါတယ္။ Ref: Cisco Aung Kham (TSJ team) Techspace Journal

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