Journal of electromagnetic engineering and science

  • 제11권2호
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  • Pages.71-75
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  • 2011
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  • 2671-7255(pISSN)
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  • 2671-7263(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
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Low Complexity Multiuser Scheduling in Time-Varying MIMO Broadcast Channels

  • Lee, Seung-Hwan (Electronics and Telecommunications Research Institute (ETRI)) ;
  • Lee, Jun-Ho (Mobile Communication and Digital Broadcasting Engineering, University of Science and Technology (UST))
  • 투고 : 2010.06.16
  • 발행 : 2011.06.30
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초록

The sum-rate maximization rule can find an optimal user set that maximizes the sum capacity in multiple input multiple output (MIMO) broadcast channels (BCs), but the search space for finding the optimal user set becomes prohibitively large as the number of users increases. The proposed algorithm selects a user set of the largest effective channel norms based on statistical channel state information (CSI) for reducing the computational complexity, and uses Tomlinson-Harashima precoding (THP) for minimizing the interference between selected users in time-varying MIMO BCs.

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참고문헌

  1. S. Lee, J. Thompson, and J. Kim, "Statistical CSIassisted multiuser scheduling in MIMO broadcast channels," IET Electronics Letters, vol. 44, no. 20, p. 1222-1223, 2008. https://doi.org/10.1049/el:20081727
  2. T. Yoo, A. Goldsmith, "On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming," IEEE Journal on Selected Areas in Communications, vol. 24, no. 3, pp. 528-541, 2006. https://doi.org/10.1109/JSAC.2005.862421
  3. X. Zhang, E. Jorswieck, B. Ottersten, and A. Paulraj, "On the asymptotic optimality of opportunistic normbased user selection with hard SINR constraint," EURASIP Journal on Advances in Signal Processing, vol. 2009, article ID. 475273, 2009.
  4. S. Lee, J. Thompson, "Simulation models for investigation of multiuser scheduling in MIMO broadcast channels," ETRI Journal, vol. 30, no. 6, pp. 765- 773, 2008. https://doi.org/10.4218/etrij.08.0107.0290
  5. X. Zhang, J. Lee, "Low complexity MIMO scheduling with channel decomposition using capacity upper bound," IEEE Trans. on Communications, vol. 56, no. 6, Jun. pp. 871-876, 2008. https://doi.org/10.1109/TCOMM.2008.060384