On the OFDM systems combining with different diversities over selective fading channels

  • Authors:

  • Joy Iong-Zong Chen;Sheng-Jie Lin

  • Affiliations:

  • Department of Communications Engineering, Da-Yeh University, Chung-Hua, Taiwan;Department of Communications Engineering, Da-Yeh University, Chung-Hua, Taiwan

  • Venue:
  • ICCOM'07 Proceedings of the 11th Conference on 11th WSEAS International Conference on Communications - Volume 11
  • Year:
  • 2007

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Abstract

In this paper the system performance of OFDM (orthogonal frequency division multiplexing) with the cases of MRC (maximal ratio combining) and dual branch SC (selective combining) diversities over correlated-Gamma distributed and correlated-Weibull fading, respectively, are investigated. Since the reason of an alternative expression of the Q-function is adopted for deriving the results of average BER (bit-error rate) of the OFDM system, the obtained formulas are not only calculated much simpler but the conducting of numerical analysis is also arrived at easily and accurate. It is valuable to claim that the system performance of the OFDM system is definitely dominated by the propagation environments, which is decided by the fading parameters both of the Nakagami-m and Weibull distributed, of the transmission of the radio systems.