
 OFDM, VOFDM, COFDM, Orthogonal Frequency Division Multiplexing 
  OFDM Receivers for BroadbandTransmission OFDM and the orthogonality principle, The general problem: Data transmission over multipath channels, Single carrier approach, Multi carrier approach, Orthogonal Frequency Division Multiplexing, An OFDM receiver for DVBT, Tasks of the inner receiver and receiver structure, Channel estimation for OFDM, Performance of the complete receiver... 
  OFDM Tutorial Frequency division multiplexing (FDM) is a technology that transmits multiple signals simultaneously over a single transmission path, such as a cable or wireless system. 
  Orthogonal FDM's (OFDM) spread spectrum technique distributes the data over a large number of carriers that are spaced apart at precise frequencies. 
 www.palowireless.com /ofdm/tutorials.asp (585 words) 
