CMC (B-TECH Electronics and Communication Engineering 6th)

Introduction to Cellular Mobile Systems:

 A basic cellular system, performance criteria,

uniqueness of mobile radio environment, operation of cellular systems, planning a cellular

system, analog & digital cellular systems.

Cellular Wireless Communication Systems:

 Second generation cellular systems: GSM

specifications and Air Interface - specifications of various units, 2.5 G systems: GPRS/EDGE

specifications and features, 3G systems: 

UMTS & CDMA 2000 standards and specifications

Elements of Cellular Radio Systems Design:

 General description of the problem, concept

of frequency reuse channels, co-channel interference reduction factor, desired C/I from a

normal case in an omni directional antenna system, cell splitting, consideration of the

components of cellular systems.

Interference: Introduction to co-channel interference, real time co-channel interference, cochannel

measurement design of antenna system, antenna parameter and their effects,

diversity receiver in co-channel interference – different types.

Cell Coverage for Signal & Traffic:

 General introduction, obtaining the mobile point to point

mode, propagation over water or flat open area, foliage loss, propagation near in distance,

long distance propagation, point to point prediction model- characteristics, cell site, antenna

heights and signal coverage cells, mobile to mobile propagation.

Cell Site Antennas and Mobile Antennas: Characteristics, antenna at cell site, mobile

antennas, Frequency Management and Channel Assignment, Frequency management, fixed

channel assignment, non-fixed channel assignment, traffic & channel assignment.

Hand Off, Dropped Calls: Why hand off, types of handoff and their characteristics, dropped

call rates & their evaluation.

Operational Techniques:

 Parameters, coverage hole filler, leaky feeders, cell splitting and

small cells, narrow beam concept.