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  • 8:31 PM, Monday, 18 Oct 2021

Course Postgraduate
Semester Electives
Subject Code AVR868
Subject Title Wireless Channels and UWB Radios


Fundamental Concepts: Terrestrial links, satellite links, macrocells, microcells, picocells, body-centric systems, UWB systems; Cellular concept; Multiple-access schemes and duplexing; Review of antenna parameters; Friss transmission formula.

Propagation Mechanisms: Review of reflection, refraction, and transmission of electromagnetic waves on a plane boundary; Rough surface scattering; Computation of field strength using ray optics; Wedge diffraction theory; Ray-fixed coordinate system; Uniform theory of diffraction.

Basic Propagation Models: Path loss, noise modeling, free space loss, plane earth loss, link budget.
Terrestrial Fixed Links: Path profiles, tropospheric refraction, obstruction loss, multiple knife-edge diffraction, multiple edge diffraction integral, diffraction over objects of finite size, influence of clutter.

Satellite Fixed Links: Effect of troposphere and ionosphere on path loss and noise.

Mobile Communication Links: Empirical and physical models for path loss; Statistical shadowing and its impact on coverage; Correlated shadowing; Narrowband fast fading: AWGN channel and narrowband fast fading channels, Rayleigh and Rician distributions, Doppler effect; Wideband fast fading: Cause and effect, wideband channel model and its parameters, frequency domain effects; Diversity techniques to overcome the effects of multipath channel. Ultra-wideband (UWB) Radio: Definition, benefits and applications of properties of UWB signals and systems; Waveform generation: Gaussian waveforms, waveform design for specific spectral masks, practical constraints; UWB channel models: Multipath channel model, path loss model, two-ray propagation model, measurement of channel characteristics; UWB antennas: Challenges in UWB antenna design, radiation of UWB signals, types of UWB antennas, beam forming for UWB signals.

Introduction to Body-Centric Wireless Systems.

Text Books
  1. Saunders, S.R., “Antennas and Propagation for Wireless Communication Systems”, John Wiley & Sons. 1999.
  2. Stutzman, W.L. and Thiele, H.A. “Antenna Theory and Design”, 2nd Ed. John Wiley & Sons. 1998
  3. Rappaport, T.S., “Wireless Communications: Principles and Practice”, Pearson Education. 2002
  4. Ghavami, M., Michael, L.B., and Kohno, R., “Ultra Wideband Signals and Systems in Communication Engineering”, 2nd Ed., John Wiley & Sons. 2007
  5. Siwiak, K. and McKeown, D., “Ultra-wideband Radio Technology”, John Wiley & Sons. 2004
  6. Hall, P.S. and Hao, Y. (Eds.), “Antennas and Propagation for Body-Centric Wireless Communication”, Artech House. 2006
  7. Pahlavan, K. and Levesque, A.H., "Wireless Information Networks", John Wiley & Sons. 1995
  8. Hess, G.C., "Land-mobile Radio System Engineering", Artech House. 1993

Same as Text Books