Telatar I E. Capacity of multi-antenna Gaussian channels[J].European Trans. on Telecommunication.1999, 10(6):585-595Foschini G J and Gans M J. On limits of wirelesscommunications in a fading environment when usingmultiple antennas [J].Wireless Personal Communications.1998, 6(3):311-335Baccarelli E, Biagi M, and Pelizzoni C. On the informationthroughput and optimized power allocation for MIMOwireless systems with imperfect channel estimation [J].IEEE Trans. on Signal Process.2005, 53(7):2335-2347Li Y (G), Soong A C K, Du Y G, and Lu J M.Beamforming with imperfect CSI [C]. Proc. IEEE WirelessCommun. Networking Conf, Hong Kong, March 2007:1156-1160.Wang C, Au E K S, Murch R D, Mow W H, Cheng R S,and Lau V K N. On the performance of the MIMO zeroforcingreceiver in the presence of channel estimation error[J].IEEE Trans. on Wireless Commun.2007, 6(3):805-810Goldsmith A J and Chua S. Variable-rate variable-powerMQAM for fading channels [J].IEEE Trans. onCommunication.1997, 45(10):1218-1230Jiang F, Wang Y, Fang X, Sun K, Hu G, and Zhang P.Cross-layer design for MIMO system with zero-forcingreceiver in the presence of channel estimation error [C].IEEE ICC, Beijing, May 2008: 3868-3872.Khalighi M A, Raoof K, and Jourdain G. Capacity ofwireless communication systems employing antenna arrays,a tutorial study [J].Wireless Personal Communication.2002, 13(1):1-30Zhou Z D, Vucetic B, and Dohler M, et al.. MIMO systemswith adaptive modulation [J]. IEEE Trans. on VehicularTechnology, 2005, 54(5): 1828-1842.