Sum power iterative water-filling for multi-antenna Gaussian broadcast channels

N. Jindal, S. Jafar, S. Vishwanath, A. Goldsmith

Research output: Contribution to journalConference articlepeer-review

22 Scopus citations


We consider the problem of maximizing sum rate on a multiple-antenna downlink in which the base station and receivers have multiple-antennas. The optimum scheme for this system was recently found to be "dirty paper coding". Obtaining the optimal transmission policies of the users when employing this dirty paper coding scheme is a computationally complex non-convex problem. We use a "duality" to transform this problem into a convex multiple access problem, and then obtain a simple and fast iterative algorithm that gives us the optimum transmission policies.

Original languageEnglish (US)
Pages (from-to)1518-1522
Number of pages5
JournalConference Record of the 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: Nov 3 2002Nov 6 2002

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Networks and Communications


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