CELLULAR AND MOBILE COMMUNICATIONS
UNIT I
Introduction to Cellular Mobile Radio Systems:
- Introduction to Cellular Mobile System
- Performance criteria, uniqueness of mobile radio environment
- operation of cellular systems
- Hexagonal shaped cells
- Analog and Digital Cellular systems.
- Cellular geometry
- concept of Frequency reuse
- Improving coverage and capacity in cellular systems,
- Cell splitting, Sectoring.
- Microcell zone concept
- Picocell zone concept
UNIT II
Elements of Cellular Radio System Design:
- Concept of frequency channels
- Co-channel interference
- Co- channel Interference Reduction Factor,
- desired C/I from a normal case in a Omni directional Antenna system
- Cellular system design in worst-case scenario with an omnidirectional antenna
- Non-co-channel interference
Cell Coverage for Signal and Traffic:
- Introduction
- Point-to-point model
- Propagation over water or flat open area
- Foliage loss
- Near and long-distance propagation
UNIT III
MOBILE RADIO PROPAGATION
Large Scale Fading:
- Free space propagation model
- Three basic propagation mechanisms,
- Reflection
- Ground Reflection (Two-Ray) Model
- Diffraction
- Scattering
- Practical link budget using path loss models.
Small Scale Fading:
- Multipath Propagation,
- Types of small-scale fading
- Parameters of Mobile Multipath channels,
- fading effects due to multipath time delay Spread and Doppler spread.
UNIT IV
Frequency Management and Channel Assignment:
- Numbering and grouping
- setup access
- paging channels
- channel assignments to cell sites and mobile units
- channel sharing and borrowing,
- sectorization
- overlaid cells
- non-fixed channel assignment.
UNIT V
- Handoff
- dropped calls and cell splitting.
- types of handoffs
- handoff invitation
- delaying handoff,
- forced handoff.
- mobile assigned handoff
- Intersystem handoff
- cell splitting
- micro cells
- vehicle locating methods.
- dropped call rates and their evaluation.
Digital Cellular Networks:
- GSM architecture
- GSM Standards
- Multiple access schemes
- TDMA,
- CDMA,
- WCDMA,
- 3G,
- Introduction to 4G and 5G.
For notes CLICK HERE
