Abstract:
Two of the major challenges facing OFDM/OFDMA systems are their sensitivity to frequency selective fading and ICI due to CFO or Doppler shift, especially when the subcarr...Show MoreMetadata
Abstract:
Two of the major challenges facing OFDM/OFDMA systems are their sensitivity to frequency selective fading and ICI due to CFO or Doppler shift, especially when the subcarrier spacing becomes smaller. We propose an OFDM transceiver design that employs frequency redundant subcarrier mapping to mitigate frequency selective fading and subcarrier spreading to achieve ICI self cancellation. Both our theoretical analysis and simulation show that such a code-spread-interleaved-redundant OFDM system design offers significant (over 10 dB) improvement in CIR and robust BER performance in different channel conditions.
Published in: 2010 IEEE International Conference on Communications
Date of Conference: 23-27 May 2010
Date Added to IEEE Xplore: 01 July 2010
ISBN Information: