Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Joint Stream-Wise THP Transceiver Design for the Multiuser MIMO Downlink Wei MIAO Xiang CHEN Ming ZHAO Shidong ZHOU Jing WANG Publication IEICE TRANSACTIONS on Communications Vol.E92-B No.1 pp.209-218 Publication Date: 2009/01/01 Online ISSN: 1745-1345 DOI: 10.1587/transcom.E92.B.209 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiuser MIMO, THP, transceiver, interference pre-cancelation, robust design, Full Text: PDF>>
Summary: This paper addresses the problem of joint transceiver design for Tomlinson-Harashima Precoding (THP) in the multiuser multiple-input-multiple-output (MIMO) downlink under both perfect and imperfect channel state information at the transmitter (CSIT). For the case of perfect CSIT, we differ from the previous work by performing stream-wise (both inter-user and intra-user) interference pre-cancelation at the transmitter. A minimum total mean square error (MT-MSE) criterion is used to formulate our optimization problem. By some convex analysis of the problem, we obtain the necessary conditions for the optimal solution. An iterative algorithm is proposed to handle this problem and its convergence is proved. Then we extend our designed algorithm to the robust version by minimizing the conditional expectation of the T-MSE under imperfect CSIT. Simulation results are given to verify the efficacy of our proposed schemes and to show their superiorities over existing MMSE-based THP schemes. | |||||
|
