TR2010-007

QRD-based Precoded MIMO-OFDM Systems With Reduced Feedback


    •  Kim, K.J., Pun, M.-O., Iltis, R.A., "QRD-Based Precoded MIMO-OFDM Systems with Reduced Feedback", IEEE Transactions on Communications, Vol. 58, No. 2, pp. 394-398, February 2010.
      BibTeX TR2010-007 PDF
      • @article{Kim2010feb,
      • author = {Kim, K.J. and Pun, M.-O. and Iltis, R.A.},
      • title = {QRD-Based Precoded MIMO-OFDM Systems with Reduced Feedback},
      • journal = {IEEE Transactions on Communications},
      • year = 2010,
      • volume = 58,
      • number = 2,
      • pages = {394--398},
      • month = feb,
      • issn = {0090-6778},
      • url = {https://www.merl.com/publications/TR2010-007}
      • }
  • Research Area:

    Communications

Abstract:

QR decomposition (QRD)-based precoded MIMO-OFDM systems with reduced feedback are proposed to convert the MIMO-OFDM channel into layered subchannels. QRD-M is further combined with either singular value (SVD) or geometric mean decomposition (GMD) of the time-domain channel impulse response matrix. As a result, the receiver in the proposed systems only needs to feed back information describing one precoding matrix for all carriers. Simulation results confirm the bit-error-rate (BER) and throughput performance superiority of the proposed systems compared to conventional SVD per-carrier precoding schemes.

 

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