ismail elsayed

Why Wireless :Why Wireless !! All of us use at least one wireless device and most of us ask a question to himself why wireless in this simple article i will try to answer this question firstly i will discuss The kinds of transmission medium to know why the wir…

intro to GSM هو موضوع بسيط كده عن الطريق لل gsm كبداية بالصور وشوية كلام قليل وان شاء الله ازود اكتر في مجال الاتصالات عامتا والانظمة زي ال GSM ,UMTS ,4G Single Cell Systems The single cell system suffers from handover (the call is disconnected when moving fro…