Improving the frame-error-rate of spatial multiplexing in block fading by randomly rotating the signal constellation

@article{Larsson2004ImprovingTF,
  title={Improving the frame-error-rate of spatial multiplexing in block fading by randomly rotating the signal constellation},
  author={Erik G. Larsson},
  journal={IEEE Communications Letters},
  year={2004},
  volume={8},
  pages={514-516}
}
We demonstrate that one can improve the coded frame-error-rate of spatial multiplexing in block fading by randomly rotating the signal constellation. Unlike linear precoding, our method: 1) does not require coding over time and 2) brings a performance improvement at essentially no additional computational expense. A discussion of the results is provided. 
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