Publication

An Undergraduate-level, Problem-based Introduction to Orthogonal Frequency-Division Multiplexing

Publication Info

Publication

An Undergraduate-level, Problem-based Introduction to Orthogonal Frequency-Division Multiplexing

Abstract

Principles of Wireless Communication (PWC) is an upper-level Electrical and Computer Engineering (ECE) elective taught at Olin College, an undergraduate-only engineering institution that is known for its small size and project-based learning (PBL) curriculum. PWC takes a top-down approach to teaching where students develop an understanding of wireless communications principles by transmitting and receiving data across physical and simulated channels. The course is run in a studio-like environment; class time is used collaboratively to complete three labs using MATLAB and software-defined radios (SDRs). After each lab is completed, teams write a report which details their implementation, the theory behind the algorithms they wrote, and relevant quantitative benchmarks like constellation plots, signal-to-noise ratio (SNR) calculations, and bit error rate calculations. Labs 1 and 2 entail implementations of binary phase-shift keying (BPSK) and quadrature phase-shift keying (QPSK) along with multiple-input multiple-output (MIMO) system simulations. Lab 3 culminates in students implementing orthogonal frequency-division multiplexing (OFDM) from first principles and communicating data over the air. OFDM is a standard multicarrier scheme used in WiFi and Long-Term Evolution (LTE) systems among others. By implementing OFDM according to the required specifications, students execute a real-world project and apply self-directed learning techniques to acquire the relevant technical skills much like one would in an industry or research position. Throughout this process, the students gain a deep familiarity with the OFDM algorithm while preparing data at specific points in the processing pipeline for meaningful visualization.

CiTation

P. Boyalakuntla, M. Goldwater, U. Gupta, W. Q. Lohmeyer and S. Govindasamy, "An Undergraduate-level, Problem-based Introduction to Orthogonal Frequency-Division Multiplexing," 2022 IEEE Frontiers in Education Conference (FIE), Uppsala, Sweden, 2022, pp. 1-8, doi: 10.1109/FIE56618.2022.9962599.

Contributors

Info

Date:
November 29, 2022
Type:
Conference Paper
DOI:
10.1109/FIE56618.2022.9962599