EC-703 (A) RGPV B.Tech
Cellular Mobile Communication (CMC)
Previous year papers and the official syllabus are free to read, no account needed.
Previous Year Papers
2 papers, latest Jun 2025
Syllabus, notes and important questions for EC-703 (A)
Syllabus units
Topics as the official RGPV syllabus lists them.
Unit 1 Introduction to cellular mobile system 12 topics
- Basic cellular system
- Performance criteria
- Uniqueness of mobile radio environment
- Operation of cellular systems
- Planning of cellular system
- General description of problem
- Concept of frequency reuse channels
- Co‑channel interference reduction factor
- Desired C/I in an omni‑directional antenna system
- Hand‑off mechanism
- Cell splitting
- Components of cellular systems
Unit 2 Cell coverage for signal and traffic 15 topics
- General introduction
- Mobile point‑to‑point model
- Propagation over water or flat open area
- Foliage loss
- Propagation in near‑in distance
- Long distance propagation
- Path loss from point‑to‑point prediction model
- Cell site antenna heights and signal coverage cells
- Mobile‑to‑mobile propagation
- Equivalent circuits of antennas
- Gain and pattern relationship
- Sum and difference patterns
- Antennas at cell site
- Unique situations of cell site antennas
- Mobile antennas
Unit 3 Cochannel interference reduction 19 topics
- Cochannel interference
- Real‑time cochannel interference measurement at mobile radio transceivers
- Design of antenna systems – omni‑directional and directional
- Lowering the antenna height
- Reduction of cochannel interference
- Umbrella‑pattern effect
- Diversity receiver
- Designing a system to serve a predefined area that experiences cochannel interference
- Adjacent channel interference
- Near‑end‑far‑end interference
- Effect on near‑end mobile units
- Cross‑talk
- Effects of coverage and interference by applying power decrease
- Antenna height decrease
- Beam tilting
- Effects of cell site components
- Interference between systems
- UHF TV interference
- Long‑distance interference
Unit 4 Frequency management and Channel Assignment 18 topics
- Frequency management
- Frequency spectrum utilization
- Setup channels
- Channel assignment
- Fixed channel assignment
- Non‑fixed channel assignment algorithms
- Additional spectrum
- Traffic and channel assignment
- Perception of call blocking from the subscribers
- Value of implementing handoffs
- Initiation of handoff
- Delaying a handoff
- Forced handoff
- Queuing of handoff
- Power‑difference handoff
- Mobile assisted handoff and soft handoff
- Cell‑site handoff and intersystem handoff
- Dropped call rate formula
Unit 5 Digital Cellular Systems 16 topics
- GSM architecture
- Layer modeling
- Transmission
- GSM channels and channel modes
- Multiple access scheme
- CDMA terms of CDMA systems
- Output power limits and control
- Modulation characteristics
- Call processing
- Hand‑off procedures
- Miscellaneous mobile systems – TDD systems
- Cordless phone
- PDC
- PCN
- PCS
- Non‑cellular systems