When the mobile is switched on it will select the registered PLMN in the mobile if there exist one. If there is no registered GSM PLMN or the register
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The coding mode is called Regular Pulse Excited-Long Term Prediction (RPE-LTP). It works as follow: 8KHZ of sampling is performed first, then di
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As previously I write about fading effect in GSM here I write about Fade Margin Calculation in GSM. Cell area probability (CAP ) is the percentage
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Site selection is based on a number of criteria. It may not be possible to satisfy all these criteria at the same time, but it is important to select
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When we talk about antenna then we need to understand about antenna installation and specially about antenna downtilting.lets assume that antenna inst
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The actual frequency planning of certain areas is usually conducted with such areas divided into segments geographically, i.e., first divide a complex
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Isolated reuse technology refers to 1*3 or 1*1 reuse with short reuse distance and severe interferences, radio frequency hopping technology has to be
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Underlaid Overlaid Frequency Allocation In the Overlaid/Underlaid technology, all frequency carriers in the cell are divided into two parts, of whic
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Capacity increase when reuse density is multiplied: Supposing there are 300 cells Bandwidth: 8 MHz (40 frequency) Normal 4*3 reuse: reuse den
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Multi-layer reuse pattern technology means to divide the whole frequency resources into different subgroups according to specific principles. Each sub
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The basic frequency reuse mode of GSM is 4*3 frequency reuse. It is the basic of other frequency reuse modes, we also call it regular frequency reuse
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GSM is an interference restricted system. Carrier-to-interference ratio (C/I), also called interference protection ratio, refers to the ratio of all u
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