Showing posts from January, 2022

Demodulation

Demodulation: The part of the transmitted forward channel signal that is important to the user is d…

Modulation

Modulation: The GSM uses 0.3 GMSK modulation . 0.3 describes the 3 dB bandwidth of the Gaussian p…

Interleaving

Interleaving: Interleaving To minimize the effect of sudden fades on the data that is received, th…

Channel Coding

Channel Coding: The speech coder output bits are grouped for error protection, according to their …

Handover

Handover: Handoff or Handover is the process of transferring a mobile station from one channel or…

Calling

Calling: Upon powering up the mobile terminal, try to initially register the mobile with the desir…

Protocols

Protocols: The signaling protocol in GSM is structured into three general layers depending on the…

Traffic Channel (TCH)

Traffic Channel (TCH): Traffic channels carry digitally encoded user data or user speech on the fo…

Radio Interface

Radio Interface: The GSM networks use two 25 MHz bandwidths globally in bands. The 890-915 MHz ba…

Abis Interface

Abis Interface:  Abis Interface Abis interface is used to connect a BTS to a BSC. This interface …

Visitor Location Register (VLR)

Visitor Location Register (VLR): Visitor Location Register (VLR) The Visitor Location Register (VL…

Mobile Switching Center

Mobile Switching Center (MSC): Mobile Switching Center The Mobile Switching Center connects to fi…

That is All