Telecom Interview Questions & Answers "IMPORTANT"

Telecom Interview Questions & Answers

What is ciphering

Ciphering modifies the contents of the eight interleaved blocks through the use of encryption techniques to the particular mobile station and base transceiver station.

Two types of ciphering algorithms, called A3 and A5, are used in GSM to prevent unauthorized network access and privacy for the radio transmission respectively.

Antenna Principals For Mobile in Telecommunication

Antenna Systems and Its Principals

In the last few years a large technological jump has taken place in the field of mobile communications due to the introduction of new mobile communication networks (GSM/PCN). The number of subscribers worldwide has risen to over 150 Million. Figure. shows an overview of the mobile communications services and the relevant frequency ranges within Germany alone.