Wireless Networking · Unit 10
Cellular Systems and Standards
Exam-focused notes for Cellular Systems and Standards (Wireless Networking, BIT357): what the TU syllabus asks and how it has actually been tested, with 3 solved past questions from this unit.
What this unit covers
- 3G technology problems
- 4G technology solutions and tools
- 4G techniques and standards
- 5G cellular systems
- 5G tools and techniques
- Wireless LAN standards
- WAP protocol
4G technology solutions and tools
Discuss tools and techniques used in 4G and 5G cellular systems. [5]
1. OFDM (Orthogonal Frequency Division Multiplexing) - Divides the channel into multiple orthogonal subcarriers - Improves spectral efficiency and reduces inter-symbol interference - Enables high data rates (up to 300 Mbps) 2. MIMO (Multiple-Input Multiple-...
Full solved answer →WAP protocol
Write short notes a) WAP b) DPSK [5]
WAP is a protocol designed to enable access to internet services and advanced data services on mobile devices and wireless networks. Key characteristics: - Provides a standardized framework for delivering internet content to mobile phones and PDAs - Bridges...
Full solved answer →3G technology problems
Discuss the problems of 3G technologies and how these problems are addressed in 4G? [5]
1. Limited Bandwidth and Data Rates - 3G offered maximum data rates of 2 Mbps, which was insufficient for multimedia applications - Bandwidth was shared among many users, causing congestion 2. High Latency - 3G had higher latency (100-500 ms), making real-t...
Full solved answer →Make Unit 10 stick
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