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}, publisher={IEEE}, proceedings_a={CHINACOM2008-WCN}, year={2008}, month={11}, keywords={multiple-input multiple-output adaptive modulation channel state information bit error rate}, doi={10.1109/CHINACOM.2008.4685212} }- Ranran ZHANG
Aimin YANG
Siyang Liu
Gang XIE
Yuan'an Liu
Year: 2008
Robust Adaptive Modulation for MIMO Systems
CHINACOM2008-WCN
IEEE
DOI: 10.1109/CHINACOM.2008.4685212
Abstract
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.
