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By:	Bruce Bahlmann

A spread spectrum technique developed by the military that combines good noise resistance, immunity to reflections and efficient use of the spectrum for carrier modulation in digital transmissions. OFDM uses a composite of narrow channel bands to enhance its performance in high frequency bands such as 5.x GHz in urban and rural applications where building clutter and foliage can negatively impact the propagation of radio waves. OFDM is sometimes called Discrete MultiTone (DMT) modulation and represents a transmission technique based upon the idea of Frequency-Division Multiplexing (FDM) where multiple signals are sent out at different frequencies.

Wimax: Orthogonal Frequency Division Multiplexing, Sergei Adoniev, Maxtel, Yota, Haut Débit Radio Régional, Partial Use of Sub-Carriers (French Edition) by Books LLC ($14.14)
Ieee 802.11: Contrôle D'accès Au Support, Wi-Fi Protected Access, Wired Equivalent Privacy, Orthogonal Frequency Division Multiplexing (French Edition) by Books LLC ($14.14)
Orthogonal Frequency-Division Multiple Access: Orthogonal Frequency-Division Multiplexing, Multiple Access, Multipath Interference, Cell Site, Forward Error Correction by Betascript Publishing ($47.00)
Modulation Numérique Du Signal: Phase-Shift Keying, Code Division Multiple Access, Orthogonal Frequency Division Multiplexing (French Edition) by Books LLC ($14.14)

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