Posts From March, 2011

What is Antenna? 

Posted by leopedrini Sunday, March 20, 2011 10:49:00 AM Categories: Course
If we only ask about the device, you'll know for sure to define what is an antenna, or at least have ever seen it. We also know that changing conditions or characteristics, for example targeting them, they improve the communication link. // But if someone asked to describe what is an antenna technically speaking, how would you describe its work? That's what we'll talk about today. Basics Before we begin to define the antenna work, we need to learn (or... read more
 

OSI 7 Layers Model 

Posted by leopedrini Monday, March 14, 2011 10:48:00 AM Categories: Course
When we started this tutorial, the intention was to talk about wireless physical and logical channels. In the course of the explanations, we realized it was necessary to first make an introduction for beginners, or even a brief review for those who already know: The Layers of the OSI Reference Model. // The Reference OSI layers Model (from now we'll just call OSI Model for short) is a very common term in Computer Networks and Wireless Systems, and its understanding can be... read more
 

What is RF Drive Test (Testing)? 

Posted by leopedrini Tuesday, March 08, 2011 9:46:00 AM Categories: Course
Every good RF design, after its implantation should be evaluated. There are few ways to do this, for example through analysis of KPI (Key Performance Indicator) or through prediction tools and signal interference. Other very common and efficient way to evaluate the network is conducting a Drive Test. But what is it? // The name is intuitive: take a drive test. The Drive Test is a test performed in cellular networks regardless of technology (GSM, CDMA, UMTS, LTE, etc. ...).... read more