Mobile Cellular Systems - Alak Roy

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Nyquist Bandwidth (for noiseless channel) • For binary signals (two voltage levels) – C = 2B • With multilevel signaling – C = 2B log 2 M • M = number of discrete signal or voltage levels 18
Signal Quality • The signal quality depends on the ratio between signal power and interference (noise) power. S I i S Ii Interference from the i-th interfering BS. • This is called signal-to- noise (interference) ratio (SNR or SIR). 19
Page 1 and 2: SLIDE #2.1 Mobile Cellular Systems
Page 3 and 4: Cellular Implementations (Gs) • 1
Page 5 and 6: Cellular Implementations(Gs) • 4G
Page 7 and 8: Frequency Division Duplex (FDD) mob
Page 9 and 10: Number of User Channels in AMPS •
Page 11 and 12: Cellular Architecture MSC PSTN MS B
Page 13 and 14: Hexagonal Cells 13
Page 15: Example: K = 7 15
Page 20 and 21: Signal-to-Noise Ratio • Ratio of
Page 22 and 23: Example of Nyquist and Shannon Form
Page 24 and 25: 24 HANDOFF IN CELLULAR SYSTEMS
Page 26 and 27: Handoff Decisions • Usually based
Page 28 and 29: Traditional Handoff Algorithms Choo
Page 30 and 31: Example Receiver Threshold 30
Page 32 and 33: Who and When • Who initiates hand
Page 34 and 35: Types of Handoff • Hard handoff -
Page 36 and 37: High priority for Handoff • In no
Page 38 and 39: Queuing Handoff Calls (QHC) • Que
Page 40 and 41: Queuing Handoff Calls • QHC can b
Page 42: Other practical problems with hando

Mobile Cellular Systems - Alak Roy

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