E8B08 : What describes orthogonal frequency-division multiplexing (OFDM)?
A
A frequency modulation technique that uses non-harmonically related frequencies
B
A bandwidth compression technique using Fourier transforms
C
A digital mode for narrow-band, slow-speed transmissions
D
A digital modulation technique using subcarriers at frequencies chosen to avoid intersymbol interference
Correct Answer: A digital modulation technique using subcarriers at frequencies chosen to avoid intersymbol interference