How Diagonal Interleaving for Speech in GSM

Interleaving in gsm used in gsm to reduce error and for speech diagonal types interleaving used here I write how speech in gsm interleaving diagonally. The diagram below illustrates, in…

Definition and works of Interleaving in GSM

The Definition of Interleaving is simply encode logical channel for error protection and security.lets understand how interleaving works in gsm. Having encoded, or error protected the logical channel, the next step…

How Radio Path Channel Encoding in GSM

To protect the logical channels from transmission errors introduced by the radio path, many different coding schemes are used. The diagram below illustrates the coding process for speech, control and…

What is Burst in GSM and Burst Types in GSM

The Below a GSM burst. It consists of several different elements. These elements are as below: This is the area in which the speech, data or control information is held….

How 26 and 51 Multiframes in GSM

GSM is very complicated when we talk about its rf side and in it very complicated to understand the structure of 26 and 51 Multiframes, here my try to make…

Why and What Echo Canceller in GSM

What is Echo Canceller and why it require in GSM – as from name Echo canceller is nothing but the process to remove duplicate signal or delayed signal, let’s see…

How Authentication Center (AUC) works in GSM

When we talk about Mobile Business then its worst useful without authentication means to make Network as business all user required to be authenticate lets understand how authentication done in…

What is HLR and VLR and its function in GSM

As From the Name VLR means Visitor Location Register and HLR means Home Location Register so HLR having all detail of subscriber and VLR having temporary details for mainly call…

Why and How BSIC Planning in GSM

Why BSIC Planning in GSM ? Because when tight frequency planning required or we have very limited frequency to plan then to reduce Mobile confusion about cell id BSIC used to…

GSM RF Optimization Step by Step

Here I write about GSM RF Optimization Step by Step and how to find KPI degradation and its solution. The RF network optimization process can be categorized by the following…

GSM Mobile Equipment and GSM SIM

The Mobile Equipment and SIM are the only parts of the GSM network which the subscriber will really see. Let’s see what inside it. GSM Mobile Equipment There are three…