Acta Metallurgica Sinica(English letters) ›› 2012, Vol. 19 ›› Issue (4): 56-63.doi: 10.1016/S1005-8885(11)60283-5

• Wireless • Previous Articles     Next Articles

MMSE based joint Tomlinson-Harashima source and linear relay precoder design in non-regenerative MIMO relay system

李楠,CHEN Peng,HE Zhi-qiang,林家儒   

  1. Key Lab of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2011-12-28 Revised:2012-03-21 Online:2012-08-31 Published:2012-09-12
  • Contact: Nan LI
  • Supported by:

    This work was supported by National Basic Research Program of China (2009CB320401), the National Key Scientific and Technological Project of China (2010ZX03003-001, 2012ZX03004005-002), the National Natural Science Foundation of China (61171100, 61171099).


This paper proposes a joint nonlinear transceiver design scheme based on minimum mean square error (MMSE) criterion for non-regenerative multiple input multiple output (MIMO) relay system. The proposed scheme decomposes the error covariance matrix, reformulates the original joint design problem as two separate optimization problems, and then provides a closed-form solution with only local channel state information (CSI) available at the source and destination. Performance evaluation shows that the proposed scheme significantly outperforms linear schemes, and has a competitive performance compared with existing global CSI based nonlinear schemes, both iterative and non-iterative.

Key words:

MIMO, non-regenerative relay, joint transceiver design, Tomlinson-Harashima precoding (THP), MMSE