Diagonally weighted orthogonal space-time block codes

  title={Diagonally weighted orthogonal space-time block codes},
  author={Girish Ganesan and Petre Stoica and E. G. Larsson},
  journal={Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002.},
  pages={1147-1151 vol.2}
This paper shows how the performance of orthogonal space-time block codes can be improved by using a diagonal weighting matrix at the transmitter. The optimal diagonal weighting matrix which minimizes the bit-error-rate is derived. Since the optimal weights depend on the channel, a feedback from the transmitter to the receiver is necessary. However this feedback can be achieved using only log/sub 2/(n/sub t/) bits where n/sub t/ is the number of transmit antennas. Simulations show that for a… CONTINUE READING
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