What and Why Drive Test in RF Network

INTRODUCTION   Predesign drive test for measurement integration This is at beginning of design when no site has been built or even selected. All test sites are temporary. Drive test…

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…

GSM Repeater what and How to Use

Repeater units are designed to receive signals from a donor site, amplify and rebroadcast the donor sites signals into poor coverage areas or to extend the coverage range of the…

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…

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…

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…

How Diagonal Interleaving for Data in GSM

To Improve Error Protection and Security of Data the Data is Interleaved and its type is Diagonal let’s check how it works. The diagram below illustrates, in a simplified form,…

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…

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