Joint beamforming scheme with low complexity for multiuser MIMO system
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College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications,College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications,College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications

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the national post-doctoral research funding (20090451239).

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    Abstract:

    In this paper, a joint beamforming scheme is presented for multiuser multiple input multiple output (MIMO) system with limited feedback. The proposed scheme uses Per-User Unitary Rate Control (PU2RC) at the transmitter and the SINR-maximization-based antenna combining algorithm at the receiver, searching optimal receive combiner by using a generalized Rayleigh-Ritz method. Simulation results show the scheme makes full use of channel information, improves the performance of the conventional PU2RC system, and outperforms the zero forcing (ZF) joint beamforming schemes in terms of the sensitivity to the channel state information (CSI) quantization error, the complexity of user selection, and the sum rate in the case of low feedback rates conditions.

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lu min, Feng Guangzeng, Meng Qinmin. Joint beamforming scheme with low complexity for multiuser MIMO system[J].,2012,27(4).

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History
  • Received:July 13,2011
  • Revised:October 10,2011
  • Adopted:October 25,2011
  • Online: August 21,2012
  • Published:
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