Trace balancing for multiuser MIMO downlink transmission

Holger Boche, Martin Schubert, Eduard A. Jorswieck

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations


We consider the problem of balancing individual capacities in a multi-user MIMO downlink channel. If perfect channel state information is available at the base station, the rates of all users can be jointly controlled by adjusting the transmit covariance matrices. We propose a new transmission strategy based on trace balancing, which is optimal in the low SNR regime. Otherwise, it provides an approximation. An iterative algorithm is proposed, which rapidly converges to the global optimum of the trace balancing problem.

Original languageEnglish
Pages (from-to)1379-1383
Number of pages5
JournalConference Record - Asilomar Conference on Signals, Systems and Computers
StatePublished - 2002
Externally publishedYes
EventThe Thirty-Sixth Asilomar Conference on Signals Systems and Computers - Pacific Groove, CA, United States
Duration: 3 Nov 20026 Nov 2002


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