Recursive and trellis-based feedback reduction for MIMO-OFDM with transmit beamforming

  title={Recursive and trellis-based feedback reduction for MIMO-OFDM with transmit beamforming},
  author={Shengli Zhou and Baosheng Li and Peter Willett},
  journal={GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.},
  pages={5 pp.-3916}
We consider a MIMO-OFDM system with transmit beamforming applied on each OFDM subcarrier, where each beamforming vector is drawn from a codebook with finite size. Depending on the channel realization, the receiver decides the optimal beamforming vector on each subcarrier, and informs the transmitter through a rate-limited feedback link. Exploiting the fact that the channel responses across OFDM subcarriers are correlated, we propose two methods to reduce the amount of needed feedback. One is… CONTINUE READING


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Highly Influential
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