Courses


EE 301L

This course is the fundamental undergraduate course on linear signals and systems, introducing time-continuous and time-discrete Fourier and Laplace transforms, sampling theorem, and the basics of communications systems and control theory. The course is also an essential preparation for 400-level classes in communications, signal processing, and controls, and provides an introduction to MATLAB for practicing implementation of systems. The detailed syllabus can be found here.

EE 535

This course provides an introduction to wireless communications systems. Starting with the fundamentals of wireless propagation and digital communication, the course then proceeds to the core technology of wireless systems, such as diversity, equalizers, interference mitigation in cellular systems, and OFDM. The course is an essential preparation for students aiming for a career among the many wireless companies. Details about the class can be found here.

EE 635

Building on the fundamentals of 535, this course describes the key technologies of 5G, one of the hottest research topics in engineering. Massive MIMO, mm-wave systems, hetnets, and 5G standardization. The instructor (Andy Molisch) recently spent his sabbatical in industry, deeply involved in 5G research and standardization, and thus provides first-hand information. Details about the class can be found here.

Textbook




The textbook Wireless Communications presents a comprehensive coverage of this field which, in only a decade, has grown from a niche market into one of the most important industries. The book describes the scientific fundamentals, as well as standardized systems and practical applications of cellular telephony, wireless computer networks, and other wireless systems

Appendices: the appendices of the book are available at the can be downloaded at the companion website at the publisher www.wiley.com/go/molisch ; copyright lies with Wiley - IEEE Press

For instructors: if you adopt this book for your course, presentation slides (around 700 slides) and a detailed solutions manual are available. You can receive it either from the publisher or by sending an email to the author, molischATusc.edu.

The book can also be found at Amazon. The book is available as E-Book, and its material is included in IEEE Xplore.


TABLE OF CONTENTS

Preface

List of abbreviations

List of symbols

PART I: INTRODUCTION

1. Applications and requirements of wireless services
2. Technical challenges of wireless communications
3. Noise- and interference-limited systems

PART II: WIRELESS PROPAGATION CHANNELS

4. Propagation mechanisms
5. Statistical description of the wireless channel
6. Wideband and directional channel characterization
7. Channel models
8. Channel sounding
9. Antennas.

PART III: TRANSCEIVERS AND SIGNAL PROCESSING

10. Structure of a wireless communication link
11. Modulation formats
12. Demodulation
13. Diversity
14. Channel coding
15. Speech coding (Gernot Kubin, Graz University of Technology, Austria)
16. Equalizers

PART IV: MULTIPLE ACCESS AND ADVANCED TRANSCEIVER SCHEMES

17. Multiple access and the cellular principle
18. Spread spectrum systems
19. Orthogonal frequency division multiplexing (OFDM)
20. Multiantenna systems

PART V: STANDARDIZED WIRELESS SYSTEMS

21. Cognitive Radio
22. Relay, multi-hop, and cooperative communications
23. Video Coding
24. GSM global system for mobile communications
25. IS-95 and CDMA 2000
26. WCDMA/UMTS
27. 3GPP long-term evolution
28. WiMax/IEEE 802.16
29. Wireless Local Area Networks
30. Exercises (Peter Almers, Ove Edfors, Hao Feng, Fredrik Floren, Anders Johanson, Johan Karedal, Buon Kiong Lau, Christian Mehlfuehrer, Andreas F. Molisch, Jan Plasberg, Barbara Resch, Jonas Samuelson, Junyang Shen, Andre Stranne, Fredrik Tufvesson, Anthony Vetro, and Shurjeel Wyne)

References

Index

Directed Research Projects


Directed Research is a great opportunity for MS and undergraduate students to gather first-hand experience in cutting-edge research. DR projects are always closely tied to larger research projects going on in our group, ensuring that the problems are pertinent, and there is intense interaction with faculty and PhD students; in many cases DR students can be (co)authors of publications resulting from their work.

We only accept applications for specific projects listed below (if no projects are listed, we don’t have anything available – please check back regularly). When applying for a project, please make sure to point out your skills/experience that is especially relevant for this specific project – don’t just send in a generic CV.

Prospective PhD students, PostDocs, and Visitors


The WiDeS group at the University of Southern California has a position available for a PostDoc in the area of mm-wave and THz channel measurement and modeling. Experience with mm-wave/THz measurement equipment (VNA, etc.) is essential; experience in channel measurement and modeling is beneficial but not a prerequisite. Please send your application to Prof. Andy Molisch, molisch@usc.edu, and ensure that your cover letter describes in detail your measurement expertise and experience.

Why become a student or PostDoc at WiDeS

The Viterbi School at USC is one of the top engineering schools in the USA, and WiDeS is proud to be a part of this great environment. In this tradition, we perform cutting-edge research that has a high profile – many of our papers are highly cited or gain best-paper awards, and thus create a solid basis for the future careers of our PhD students and PostDocs. Our alumni are now professors in academia, work in the research departments of companies ranging from Amazon to Google to Intel, or are key members of startups.

At WiDeS, we subscribe to the following principles -
  • comply to the "rulebook" of WiDeS.
  • close collaborations between the group members : collaborations almost always enhance the output of everybody involved. We encourage information exchange between all group members. Every group member will participate in weekly meetings. Also, weekly meetings with Prof. Molisch are part of the routine.
  • non-hierarchical thinking : scientific ideas are judged on their merits, not according to who suggested them. That is the good thing about science: there is an objectively correct answer. Side note: Administrative questions are, naturally, decided by project leaders and the head of group.
  • interest in practical applications : the group deals with a wide range of topics, ranging from pure measurements to quite theoretical work. But ultimately, everything has to have a relation to the physical reality, and you are encouraged to spend at least some time to think about those relationships. You are also encouraged to spend at least one or two summers in an industrial research lab, and we will help you to land such an internship.

If you feel that you fit in well in such an atmosphere, you are interested in our research areas , and you have the "hard skills" to contribute to world-class research, then please fill out the application form here and you will be contacted later.

Women, underrepresented minorities, and students with disabilities are especially encouraged to apply.

Open positions for PhD Students and PostDocs

There are currently no specified calls for PhD students, though I will be accepting new students in the fall 2019. If you want to apply, please check the section Why become a student or PostDoc at WiDeS.
There are currently no specific calls for PostDocs. If you have external funding and want to become a visitor, please check the section For Prospective Visitors.

For Prospective Visitors

WiDeS is proud of its many international collaborations, and are positive to hosting visitors. However, please note that the Viterbi-school is space-limited, and therefore limits on the number of visitors, as well as strict procedures for the approval of visitors by the dean, are in place. This holds for all visitors, from PhD students to PostDocs, to faculty.

If you want to visit WiDeS, the first step is to send an email to Prof. Molisch with a description of what you envision for your visit. Please do not send a generic “Dear sir…” letter – it will not be considered. Elaborate why a visit would be productive, where you see the synergies between your work and the work going on at WiDeS, etc. It should form the basis of a detailed research plan that will be worked out between you and us if the synergies look promising.

Finally, please note that as per USC policy, visiting PhD students with scholarships from CSC cannot be accepted (students with funding from their home universities, or PostDocs/faculty with CSC funding are ok).

PostDoc and visiting PhD Positions Available at USC: Wireless Channel Measurement and High-Resolution Evaluation

The WiDeS group of Prof. Andy Molisch at the University of Southern California seeks a PostDoctoral Researcher to work on the measurement of wireless propagation channels, and particularly the high-resolution evaluation of those measurements. Emphasis of the work is in the mmWave and THz frequency range. The position is available starting October 1 st 2021. In addition to the PostDoc position, applications for visiting PhD students are also welcome.

The work, which is funded by the National Science Foundation as well as industrial sponsors, aims to develop new measurement technologies, perform measurement campaigns, and extract parameters by means of high resolution parameter estimation of propagation channels in the frequency range between 20 and 500 GHz. The resulting channel models will be of great interest in the development of 6G systems.

The group is one of the world leaders in the area of propagation channel measurement and modeling, with cutting-edge equipment, a strong team of researchers, PostDocs, and PhD students with accumulated knowledge and experience in measurement and modeling techniques, and a long history of innovations; for details visit WiDeS website. The University of Southern California is ranked among the top-10 universities in the US in engineering (US News and World Report). The PostDoctoral Fellow will have the opportunity to interact with both the WiDeS group as well as other groups across campus. Mentoring and career support will be provided to the successful candidate.

The successful candidate(s) will have a solid background in high resolution parameter extraction for channel measurements and/or experience with propagation channel and/or RF measurements, preferably in the mmWave/THz range. A good publication record is expected. A CV with details of the applicable experience, skills, and publications, and contact details (or recommendation letter) of at least one reference should be sent to molisch@usc.edu. For full considerations, applications should be sent by 9/25/2021. After this date, the search will continue until the position is filled.

Applications from female researchers and underrepresented minorities are particularly encouraged.

Student Project Apply


Drone Project

Description:
We are looking for an undergraduate student worker or directed research student who can assist drone communications research at Wireless Devices and Systems group. Job description:
1. Find out the regulations and requirements for flying drones on campus/urban environment for research purposes
2. Learn to fly drone manually and implement automatic trajectory planning
3. Contact potential experiment site to attain permissions to conduct wireless communication research
4. Assist mentors with testing wireless devices for the drone.
5. Process the measured channel data to be used for signal processing purposes.
Requirements: Ideally, the candidate should have knowledge or experience in one or more of the following:
1. Drones
2. Matlab
3. LabVIEW
4. Linear algebra/linear systems (matrix/tensor operations)
5. Communications (digital/wireless)
6. Previous research/internship experiences
Work hours can be adjusted flexibly. Compensation may be negotiated.

Device-to-Device Sub-GHz channel modeling for Public-Safety Applications

Description:
The current Device-to-Device channel models used for system development and verification are not suitable for public safety applications, for which more robust and reliability-centered models would be needed. This project deals with this problem over 4 main phases: Phase 1 is about designing the antennas and the channel sounder, phase 2 is about conducting the measurements, phase 3 is about processing the measurement data and creating models from them, and finally phase 4 is to use the model for LTE SideLink simulations and see how we can improve the standard without altering it. Interested candidates will be working on configuration of RF equipment, performing measurement campaigns and/or processing measurement data for Channel Models. Candidates should preferably have:
• Knowledge in Statistics, Digital Signal Processing, and/or Wireless Communication systems
• Good programming skills in Matlab, Python and/or Labview
• Willingness to work up to 20 hours per week.
• Willingness to work on the project for a period of 1 year+

Vehicle-to-Vehicle mm-wave channel modeling

Description:
Vehicle-to-Vehicle (V2V) communications has been gaining a lot of interest, with applications mainly revolving around self-driving cars. These models at 60 GHz (mmwave bands) are still lightly studied in the literature for different scenarios, information that will be critical for any system development relying on those technologies. The project deals with that problem, dividing it into 3 phases. Phase 1 is for the sounder design, Phase 2 is for carrying out the measurements, and Phase 3 is for analyzing the measurement results. Interested candidates will be working on configuration of RF equipment, performing measurement campaigns and/or processing measurement data for Channel Models. Candidates should preferably have:
• Knowledge in Statistics, Digital Signal Processing, and/or Wireless Communication systems
• Good programming skills in Matlab, Python and/or Labview
• Willingness to work up to 20 hours per week.
• Willingness to work on the project for a period of 1 year+

Measurement Cart Design

Description:
At WiDeS we are currently redesigning our measurement carts. The aim is to design and build two moving structures that will hold the transmitter and receiver equipment when performing our measurements. Key objectives are: designing a robust and secure structure to hold our measurement equipment, localization tracking, and suspension to protect the equipment against terrain roughness. Versatility is also an objective as the carts will be used for different measurement campaigns.
Candidates should preferably have:
• Experience with mechanical CAD design and ideally manufacture.
• Knowledge in microcontroller programming with sensors.
• Willingness to work up to 20 hours per week.

Statisitcal Analysis of Line-of-Sight Probability Data in Cellular Networks

Description:
The goal of the project is to create models for the line of sight probability based on real measured data from cellular towers all over the United States. The goal is to fit the given data to pre-existing models, model the error in real data, and find the distribution of the model parameters over all scenarios. You will first get familiar with the existing programs, then develop Matlab programs for fitting and tests to make sure these programs work properly, we intend to run the programs on a very large database. Credit for DR course or payed student worker available. You must be motivated to work on this research project for more than one semester.
Requirements:
• M.S. Student in EE
• EE 503, preferably EE 562
• Must be well experienced in statistics, statistical data analysis and data fitting
• Proficient in Matlab coding
Contact:
Bassel Abou Ali Modad
Email: aboualim@usc.edu
Phone: 213-709-0198
Please send in your updated CV and a cover letter indicating your graduation time and detailing why you are qualified for this position. If qualified, an in-person interview will be conducted as the final step.


Please apply >>here.