FDM Vs. OFDM

Discussion in 'General Electronics Chat' started by vinodquilon, Oct 18, 2010.

  1. vinodquilon

    Thread Starter Member

    Dec 24, 2009
    234
    0
    What is the difference between FDM & OFDM?
    Where they are using ?(MB OFDM in UWB, OFDM in wireless)
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,769
    969
    Google is your friend
    Frequency division multiplexing (FDM) is a technology that transmits multiple signals simultaneously over a single transmission path, such as a cable or wireless system. Each signal travels within its own unique frequency range (carrier), which is modulated by the data. Orthogonal FDM's (OFDM) spread spectrum technique distributes the data over a large number of carriers that are spaced apart at precise frequencies. This spacing provides the "orthogonality" in this technique which prevents the demodulators from seeing frequencies other than their own. The benefits of OFDM are high spectral efficiency, resiliency to RF interference, and lower multi-path distortion.
     
    vinodquilon likes this.
  3. vinodquilon

    Thread Starter Member

    Dec 24, 2009
    234
    0
    thanks a lot...
     
Loading...