Mobile Communications Chapter 2: Wireless Transmission

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Real world example Mobile Communications SS2003
• Signal can take many different paths between sender and receiver due to reflection, scattering, diffraction signal at sender Multipath propagation • Time dispersion: signal is dispersed over time interference with “neighbor” symbols, Inter Symbol Interference (ISI) • The signal reaches a receiver directly and phase shifted distorted signal depending on the phases of the different parts Mobile Communications SS2003 LOS pulses multipath pulses signal at receiver
Page 1 and 2: Mobile Communications Chapter 2: Wi
Page 3 and 4: Frequencies for mobile communicatio
Page 5 and 6: Signals I • physical representati
Page 7 and 8: A [V] • Different representations
Page 9 and 10: Antennas: simple dipoles • Real a
Page 11 and 12: • Grouping of 2 or more antennas
Page 13: Signal propagation • Propagation
Page 17 and 18: • Multiplexing in 4 dimensions -
Page 19 and 20: t Time multiplex • A channel gets
Page 21 and 22: • Each channel has a unique code
Page 23 and 24: digital analog demodulation radio c
Page 25 and 26: Advanced Frequency Shift Keying •
Page 27 and 28: • BPSK (Binary Phase Shift Keying
Page 29 and 30: Hierarchical Modulation • DVB-T m
Page 31 and 32: i) iii) dP/df dP/df Effects of spre
Page 33 and 34: DSSS (Direct Sequence Spread Spectr
Page 35 and 36: FHSS (Frequency Hopping Spread Spec
Page 37 and 38: FHSS (Frequency Hopping Spread Spec
Page 39 and 40: Frequency planning I • Frequency
Page 41: Cell breathing • CDM systems: cel

Mobile Communications Chapter 2: Wireless Transmission

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