An Equalization Technique for Orthogonal Frequency-Division Multiplexing Systems in Time-Variant Mul - Communications, IEEE Transactions on

نویسندگان

  • Won Gi Jeon
  • Kyung Hi Chang
  • Yong Soo Cho
چکیده

A loss of subchannel orthogonality due to timevariant multipath channels in orthogonal frequency-division multiplexing (OFDM) systems leads to interchannel interference (ICI) which increases the error floor in proportion to the Doppler frequency. In this paper, a simple frequency-domain equalization technique which can compensate for the effect of ICI in a multipath fading channel is proposed. In this technique, the equalization of the received OFDM signal is achieved by using the assumption that the channel impulse response (CIR) varies in a linear fashion during a block period and by compensating for the ICI terms that significantly affect the bit-error rate (BER) performance.

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تاریخ انتشار 2009