A low complexity complex QR factorization design for signal detection in MIMO OFDM systems

@article{Hwang2008ALC,
  title={A low complexity complex QR factorization design for signal detection in MIMO OFDM systems},
  author={Yin-Tsung Hwang and Wei-Da Chen},
  journal={2008 IEEE International Symposium on Circuits and Systems},
  year={2008},
  pages={932-935}
}
Complex QR factorization is a fundamental operation used in various MIMO signal detection algorithms. In this paper, we revise the Givens Rotation based factorization algorithm and develop an efficient scheme working in the real number domain. The complex matrix is first extended into a block-wise symmetric real number counterpart. The proposed scheme can reduce the computing complexity to almost one half by exploiting the symmetric property. Computing complexity analysis also shows the… CONTINUE READING
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