ChinaCom2008-Wireless Communications and Networking Symposium

Research Article

Robust Adaptive Modulation for MIMO Systems

  • @INPROCEEDINGS{10.1109/CHINACOM.2008.4685212,
        author={Ranran ZHANG and Aimin YANG and Siyang Liu and Gang XIE and Yuan'an Liu},
        title={Robust Adaptive Modulation for MIMO Systems},
        proceedings={ChinaCom2008-Wireless Communications and Networking Symposium},
        keywords={multiple-input multiple-output adaptive modulation channel state information bit error rate},
  • Ranran ZHANG
    Aimin YANG
    Siyang Liu
    Gang XIE
    Yuan'an Liu
    Year: 2008
    Robust Adaptive Modulation for MIMO Systems
    DOI: 10.1109/CHINACOM.2008.4685212
Ranran ZHANG1,*, Aimin YANG1,*, Siyang Liu1,*, Gang XIE1,*, Yuan'an Liu1,*
  • 1: Beijing University of Posts and Telecommunications, Beijing, China
*Contact email:,,,,


This paper investigates adaptive modulation (AM) algorithm to maximize transmission rate under bit error rate (BER) and transmit power constraints for multiple-input multiple-output (MIMO) systems with imperfect channel state information (CSI). The continuous results for the optimization problem are derived by Lagrange method and adjusted into even integers for practical use by two proposed schemes. Different from conventional AM algorithms, the proposed robust algorithm can satisfy system BER requirement even when CSI is subject to significant imperfection. Simulation results show this algorithm provides not only the more robust BER performance to CSI imperfection, but also higher spectral efficiency than the AM algorithm based on perfect CSI assumption.