Wireless Communications

Topics

• Overview of wireless communications, radio wave propagation, transmit and
• receive signal models, free-space path-loss, ray tracing, empirical path-loss
• models, simplified path-loss model.
• Shadow fading, combined path-loss and shadowing, outage probability under
• path-loss and shadowing, cell coverage area, time-varying channel impulse
• response, narrowband fading models.
• Narrowband fading models (autocorrelation, cross-correlation, power spectral
• density, envelope and power distributions, level crossing rate and average fade
• duration).
• Wideband fading models (power delay profile, coherence bandwidth, Doppler
• Capacity in AWGN, capacity of flat fading channels (channel side information at
• receiver, channel side information at transmitter and receiver, capacity
• comparisons), capacity of frequency selective channels.
• Review of digital modulations (signal space analysis, passband modulations
• amplitude and phase modulations, frequency modulation, pulse shaping)
• performance of digital modulations over fading channels (probability of error over
• AWGN channel, outage probability and average probability of error for fading
• channels).
• Effect of Doppler spread on differential modulations, inter-symbol interference for
• frequency selective fading, modulations for major wireless standards, diversity