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›› 2013, Vol. 30 ›› Issue (4): 572-576.DOI: 10.7523/j.issn.2095-6134.2013.04.021

• Brief Report • Previous Articles    

Leakage-based precoding with iterative power allocation in multi-user MIMO downlink

XIE Lei, QIU Ling   

  1. Personal Communications Network and Spectrum Spread Lab, University of Sciences and Technology of China, Hefei 230027, China
  • Received:2012-05-07 Revised:2012-09-26 Online:2013-07-15

Abstract:

To enhance the sum rate of maximizing signal-to-leakage-and-noise ratio (Max-SLNR) in the downlink multi-user multiple-input multiple-output (MU-MIMO) system, we propose an iterative power allocation scheme. Compared with conventional power allocation schemes, the proposed scheme achieves higher system throughput. Numerical results show that the complexity of the scheme is reduced by decreasing the number of iteration without losing system throughput.

Key words: MU-MIMO, SLNR, power allocation, iterative

CLC Number: