Jointly optimized heterogeneous MIMO broadcast systems

Wessam Mesbah, Hussein Alnuweiri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A heterogeneous multiple-input-multiple-output (MIMO) broadcast (BC) system is considered, with some of the users having target-rate requirements while other users are working with best-effort data rates. We assume the use of dirty paper coding, and we exploit the duality between the capacity regions of the multiple access and broadcast channels in order to optimally and jointly optimize the rates, powers and decoding order.We use the concept of stream achievable rate region (rather than user achievable rate region) and show that the best-effort users can achieve higher rates when the data streams of any user are not restricted to be decoded consecutively and when timesharing between different decoding orders is allowed. It is shown that the problem can be formulated as a convex optimization problem.We also propose an algorithm to obtain the time-sharing factors and decoding orders (corner points) required to achieve the optimal solution.

Original languageEnglish
Title of host publicationICT 2010
Subtitle of host publication2010 17th International Conference on Telecommunications
Pages339-344
Number of pages6
DOIs
Publication statusPublished - 19 Jul 2010
Event2010 17th International Conference on Telecommunications, ICT 2010 - Doha, Qatar
Duration: 4 Apr 20107 Apr 2010

Other

Other2010 17th International Conference on Telecommunications, ICT 2010
CountryQatar
CityDoha
Period4/4/107/4/10

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Keywords

  • Convex optimization
  • Heterogeneous MIMO-BC
  • MAC-BC duality

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Mesbah, W., & Alnuweiri, H. (2010). Jointly optimized heterogeneous MIMO broadcast systems. In ICT 2010: 2010 17th International Conference on Telecommunications (pp. 339-344). [5478759] https://doi.org/10.1109/ICTEL.2010.5478759