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Performance Enhancement of OFDM Systems (Using Interference cancellation schemes of TD(Transmit

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2012, 17(7), pp.77-86
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

Kim, Jang Wook 1

1동양미래대학교

Accredited

ABSTRACT

Using OFDM(Orthogonal Frequency Division Multiplexing) provides the same diversity order as MRRC(Maximal Ratio Receiver Combining). It is assumed that fading channel is constant across two consecutive symbols. Unfortunately, when the channel condition is changed for the two consecutive symbols, the OFDM using STBC(Space Time Block Code) does not offer good performance due to the large doppler shift. In this paper, we have proposed a performance enhancement scheme for OFDM using STBC over time-selective fading channel. Simulation results for various doppler shift rates are presented to robust system performance of OFDM due to using our proposed scheme over time-selective fading channel.

Citation status

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