Acta Metallurgica Sinica(English letters) ›› 2007, Vol. 14 ›› Issue (2): 19-22.doi: 1005-8885 (2007) 02-0014-05

• Wireless • Previous Articles     Next Articles

Joint spatial-frequency blind multiuser detection based on LCCMA

ZENG Yi; ZHANG Zu-fan   

  1. Chongqing University of Posts and Telecommunications
  • Received:2006-11-29 Revised:1900-01-01 Online:2007-06-30


This study addresses the problem of jointly optimizing the transmit beamformers and power control in multi-user multiple-input multiple-output (MIMO) downlink. The objective is minimizing the total transmission power while satisfying the signal-to-noise plus interference ratio (SINR) requirement of each user. Before power control, it uses the maximum ratio transmission (MRT) scheme to determine the beamformers due to its attractive properties and the simplicity of handling. For power control it introduces a supermodular game approach and proposes an iterated strict dominance elimination algorithm. The algorithm is proved to converge to the Nash equilibrium. Simulation results indicate that this joint optimization method assures the improvement of performance.

Key words:

multi-user MIMO;power control;transmit beamforming;MRT;supermodular game

CLC Number: