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Multi-antenna downlink precoding with individual rate constraints: power minimization and user ordering

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3 Author(s)
Chi-Hang Fred Fung ; Dept. of Electr. & Comput. Eng., Toronto Univ., Ont. ; Wei Yu ; Teng Joon Lim

This paper addresses the problem of achieving a specified information rate for every user in a multi-user MIMO broadcast channel. We propose two methods for finding the set of transmit covariance matrices that minimizes the transmit power subject to the dirty-paper coding rates equal to some specified values. The first method applies to the case with a fixed encoding order and each receiver has one antenna. The second applies to the general case without a fixed encoding order and with time sharing taken into account, and has a complexity polynomial in the number of users

Published in:

Communications Systems, 2004. ICCS 2004. The Ninth International Conference on

Date of Conference:

7-7 Sept. 2004