Transmit beamforming in multiple-antenna systems with finite rate feedback: a VQ-based approach

@article{Roh2006TransmitBI,
  title={Transmit beamforming in multiple-antenna systems with finite rate feedback: a VQ-based approach},
  author={June Chul Roh and Bhaskar D. Rao},
  journal={IEEE Transactions on Information Theory},
  year={2006},
  volume={52},
  pages={1101-1112}
}
This paper investigates quantization methods for feeding back the channel information through a low-rate feedback channel in the context of multiple-input single-output (MISO) systems. We propose a new quantizer design criterion for capacity maximization and develop the corresponding iterative vector quantization (VQ) design algorithm. The criterion is based on maximizing the mean-squared weighted inner product (MSwIP) between the optimum and the quantized beamforming vector. The performance of… CONTINUE READING
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