Precoder design for MIMO broadcast channels with power leakage constraints
Huang, R.; Zhi Ding
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Volume , Issue , 19-24 April 2009 Page(s):2385 - 2388
Digital Object Identifier   10.1109/ICASSP.2009.4960101
Summary:We investigate the design of MIMO linear precoders for multiuser broadcast channels under signal leakage constraints. This power leakage constraints reflect both an important security consideration and the need for interference suppression at receivers. Defining a convex optimization problem, we propose two sequential semi-definite program algorithms. In principle, our algorithms exploit both spatial diversity and multiuser diversity to enhance the overall system performance. The resulting MIMO precoded transmission demonstrates superior performance over time-division multiplexed multiuser transmission in conjunction with the traditional space-time transmission.

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