## How PLMN Selection in GSM

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

## What is Speech Coding

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

## Fade Margin Calculation in GSM

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

## Site Selection Criteria in GSM

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

## Antenna Installation and Downtilting

When we talk about antenna then we need to understand about antenna installation and specially about antenna downtilting.lets assume that antenna inst

## What is Principle for Frequency Planning in GSM

The actual frequency planning of certain areas is usually conducted with such areas divided into segments geographically, i.e., first divide a complex

## How 1x 3 or 1x1Reuse Patterns in Frequency Planing

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

## GSM Underlaid Overlaid Frequency Allocation and Configuration

Underlaid OverlaidĀ  Frequency Allocation In the Overlaid/Underlaid technology, all frequency carriers in the cell are divided into two parts, of whic

## Advantages of Multi layer frequency Reuse Pattern

Capacity increase when reuse density is multiplied: Supposing there are 300 cells Bandwidth: 8 MHz (40 frequency) Normal 4*3 reuse: reuse den

## Multi layer Frequency Reuse Pattern in GSM

Multi-layer reuse pattern technology means to divide the whole frequency resources into different subgroups according to specific principles. Each sub