Publication Date

Spring 4-25-2019


School of Engineering and Computational Sciences


Engineering: Electrical


SDR, CSMA, OFDMA, 802.11ax, Wime Project


Signal Processing | Systems and Communications


Both Carrier Sensing Multiple Access (CSMA) and Orthogonal Frequency Division Multiple Access (OFDMA) are vital techniques for WiFi radio operations. CSMA deals with decentralized sharing of the medium, and OFDMA deals with dividing up the channel into multiple smaller allocations of the channel to transmit data from multiple users simultaneously. OFDMA is a new multiple access scheme introduced in the upcoming IEEE 802.11ax standard. This paper details research with Dr. Bae in implementing portions of the upcoming 802.11ax standard using software defined radio. First, this paper provides in-depth setup information for the Wime Project and explains the Wime Project implementation in great detail. Second, this paper provides pseudo code for how to implement CSMA and an attempt at implementing OFDMA.