Distributed Block Diagonalization with Selective Zero Forcing for Multicell MU-MIMO Systems
SCIE
SCOPUS
- Title
- Distributed Block Diagonalization with Selective Zero Forcing for Multicell MU-MIMO Systems
- Authors
- Jeon, YS; Kim, YJ; Min, M; Im, GH
- Date Issued
- 2014-05
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Abstract
- This letter proposes a distributed beamforming scheme based on block diagonalization (BD) for multicell multiuser multiple-input multiple-output (MU-MIMO) downlink systems. Although conventional BD can be directly extended to these systems in a distributed manner, it suffers from sum-rate degradation due to strict zero-forcing (ZF) constraints. To overcome this problem, we introduce a sum-rate maximization problem for BD, to find the optimal selection of ZF constraints. Then we propose a search algorithm to solve the problem in a distributed and heuristic manner. Simulation results show that the proposed scheme effectively finds a near-optimal solution and significantly improves simple extended BD such that it can provide higher sum rate than the conventional schemes.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14225
- DOI
- 10.1109/LSP.2014.2311459
- ISSN
- 1070-9908
- Article Type
- Article
- Citation
- IEEE SIGNAL PROCESSING LETTERS, vol. 21, no. 5, page. 605 - 609, 2014-05
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- There are no files associated with this item.
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