Definition
Orthogonal Frequency-Division Multiple Access
Orthogonal frequency division multiple access is a multi-user version of the Orthogonal Frequency-Division Multiplex digital modulation scheme.
In OFDMA, individual sub-carriers (or groups of sub-carriers) within a channel are assigned to different users, allowing for simultaneous data transmission and reception across a shared frequency band with high spectral efficiency and reduced interference.
Comparisons
FDMA vs. OFDM
OFDM vs. OFDMA
