Frequency-Domain Receiver Design for Doubly Selective Channels

Paulo Montezuma received the Ph.D. degree from Faculdade de Ciências e Tecnologia -Universidade Nova de Lisboa, Portugal. Currently he is professor at FCT-UNL. Since 2001 he is researcher at UNINOVA and in 2013 he joined Instituto de Telecomunicações. He has been actively involved in several international research projects in the wireless communications area. He published over 30 journal papers (IET and IEEE journals) , 3 book chapters and over 90 conference papers and 11 patents. His main research activities are on transmitter design, coding and receiver design, namely for MIMO systems, OFDM and SC-FDE modulations.Fabio Silva received the Ph.D. degree from Faculdade de Ciências e Tecnologia -Universidade Nova de Lisboa (FCT-UNL), Portugal, in 2015. Currently he is engineer in Radio frequency management department at Portuguese telecommunications regulator (Anacom). He was a researcher at Uninova form 2010 to 2015. He has been actively involved in several national research projects in the broadband wireless communications area. He published over 6 journal papers and over 15 conference papers. His main research activities are on modulation and transmitter/receiver design for wireless communications, with special focus on frequency-domain implementations, namely for MIMO systems and/or OFDM and SC-FDE modulations. Rui Dinis received the Ph.D. degree from Instituto Superior Técnico, Portugal. From 2001 to 2008 he was a Professor at IST. Currently he is an associated professor at FCT-UNL. Since 2009 he is a researcher at Instituto de Telecomunicações. He has been involved in several international research projects in the broadband wireless communications area. He published 4 books, over 100 journal papers and book chapters and over 300 conference papers and has 11 patents. Main research activities are on modulation and transmitter design, nonlinear effects on digital communications and receiver design, with emphasis on MIMO systems, OFDM and SC-FDE modulations.

• List of Abbreviations. List of Symbols. Introduction. Motivation and Scope. Book Structure. Fading. Large Scale Fading. Path-Loss. Shadowing. Small Scale Fading. The Multipath Channel. Time-Varying Channel. Block Transmission Techniques. Transmission Structure of a Multicarrier Modulation. Receiver Structure of a Multicarrier Modulation. Multi-Carrier Modulations or Single Carrier Modulations. OFDM Modulations. Analytical Characterization of the OFDM Modulations. Transmission Structure. Reception Structure. SC-FDE Modulations. Transmission Structure. Receiving Structure. Comparative Analysis Between OFDM and SC-FDE. DFE Iterative Receivers. IB-DFE Receiver Structure. IB-DFE with Soft Decisions. Turbo FDE Receiver. Approaching the Matched Filter Bound. Matched Filter Bound. Approaching the Matched Filter Bound. Analytical Computation of the MFB. System Characterization. Performance Results. Performance Results without Channel Coding. Performance Results with Channel Coding. Efficient Channel Estimation for Single Frequency Networks. System Characterization. Channel Estimation. Channel Estimation Enhancement. Decision-Directed Channel Estimation. Performance Results. Conclusions. Asynchronous Single Frequency Networks. SFN Channel Characterization. Impact of Carrier Frequency Offset Effects. Channel and CFO Estimation. Frame Structure. Tracking the Variations of the Equivalent Channel. Adaptive Receivers for SFN with Different CFOs. Method I Method II Method III. Performance Results. Multipath Channels with Strong Doppler Effects. Doppler Frequency Shift due to Movement. Modeling Short-Term Channel Variations. Generic Model for Short-Term Channel Variations. A Novel Model for Short-Term Channel Variations. Channel Estimation and Tracking. Channel Estimation. Tracking of the Channel Variations. Using the Sampling Theorem to Track the Channel Variations. Novel Tracking Technique. Receiver Design. Performance Results.Important Statistical Parameters. Rayleigh Distribution. Rician Distribution. Nakagami-m Distribution. Complex Baseband Representation. Minimum Error Variance.

"The book presents a strong analytical rigor and very interesting solutions to some of the most important challenges that wireless communication engineers face. All the analytical derivations and innovative results are well supported by a large set of figures which turns the book a very useful tool. It also presents an important revision of existing techniques, which clearly enrich its quality."— João Guerreiro, Instituto de Telecomunicações, Lisbon, Portugal"The book covers a timely and important topic for current and future wireless communication systems." — Imad Barhumi, United Arab Emirates University, Al Ain, Abu Dhabi"Advanced receiver designs for frequency selective channels was, from the beginning, a disruptive idea which opened horizons to up-until-then unimaginable data rates and system capacities in wireless systems. This book offers a fresh look at receiver designs, and looks at its combination with SC-FDE and OFDM, and the impact at the system-level. Receiver designs remains a pillar of high-speed systems beyond 4G which incorporate massive MIMO and network coding at the physical layer."—Mário Marques da Silva, Universidade Autónoma de Lisboa, Portugal"There are not many books addressing the treatment of Doubly Selective Channels, and none devoted especially to the design of frequency domain receivers….this book appears to treat both block based single carrier and multicarrier communications, comparing them both in detail, on the contrary of most books devoted to multicarrier, with special emphasis on OFDM, although the growing importance of SC-FDE for uplink transmissions. This book seems to fill this void, providing a current view on the state-of-the-art." — Marco Alexandre Cravo Gomes, University of Coimbra, Portugal"This book addresses the state of the art in OFDM and SC-FDE bock transmission schemes. It includes an easy to read overview accompanied by a formal definition of the block transmission schemes and channels models. The most interesting parts cover advanced analytical tools for channel estimation and receiver design for asynchronous networks and for multipath channels with strong Doppler effects. Asynchronous access is envisioned in the transmission schemes for future 5G systems. On the other end, Doppler effects are gaining importance as higher carrier frequencies and broader bands are used. Given the tutorial presentation, these physical layer models can be quite helpful in the design and analysis of cross-layer optimized systems."—Luis Bernardo, Instituto de Telecomunicações, Lisbon, Portugal"Frequency-Domain Receiver Design for Doubly Selective Channels summarizes extensive research work on wireless communication between OFDM and SC-FDE and suggests the optimum approach. In so doing, it might revolutionize wireless communication technology."—IEEE Microwave Magazine, July/August 2018