J4 ›› 2010, Vol. 37 ›› Issue (4): 624-629+654.doi: 10.3969/j.issn.1001-2400.2010.04.008

• Original Articles • Previous Articles     Next Articles

Layer-based precoding scheme for the multi-cell MIMO system

HAO Dong-lai1,2;GE Jian-hua1   

  1. (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China;
    2. Xi'an Institute of Communication, Xi'an  710106, China)
  • Received:2009-05-01 Online:2010-08-20 Published:2010-10-11
  • Contact: HAO Dong-lai E-mail:hao_dl@126.com

Abstract:

A new layer-based precoding scheme is presented in multi-cell Multiple-Input Multiple-Output (MIMO) systems. Based on the traditional precoding algorithm, a layered precoding method is adopted in the intra and inter-cell separately. By means of the game theory and the concept of signal leakage noise rate, a precoding weights selection criteria and methods in each layer are also proposed. The scheme can obtain an interference suppression effect for multi-users in the multi-cell system. Simulation results show that the proposed algorithm, with low computational complexity, provides improvement over existing schemes.

Key words: MIMO, multi-cell, precoding, interference suppression