Orthogonal Frequency - Division Multiplexing (OFDM)

 

    OFDM stands for Orthogonal Frequency Division Multiplexing, which separates a high data rate modulating stream into numerous slowly modulated narrowband close-spaced subcarriers, making it less susceptible to frequency selective fading. OFDM is a frequency-division multiplexing (FDM) method developed by Bell Labs’ Robert W. Chang in 1966. To convey data in parallel, OFDM uses several closely spaced orthogonal subcarrier signals with overlapping spectra. Fast Fourier transform algorithms are used in demodulation.Click here to continue reading