Coordinated spatial multiplexing with orthogonalized channels for multiuser MIMO downlink systems

Jin Sung Kim, Sung Hyun Moon, Inkyu Lee

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this paper, we propose a new coordinated spatial multiplexing algorithm for multiuser multiple-input multiple-output (MIMO) downlink systems. Unlike other conventional coordination methods, our scheme exploits orthogonalized effective channels to yield the transmit precoding and receive combining matrices without requiring an iterative operation. In order to determine each row of the effective channels, a greedy type successive process is utilized. Simulation results show that the performance of our proposed scheme is very close to the conventional iterative scheme with significantly reduced complexity. Also, our method achieves a 3 dB performance gain over the conventional non-iterative scheme.

Original languageEnglish
Article number6177988
Pages (from-to)1996-2001
Number of pages6
JournalIEEE Transactions on Wireless Communications
Issue number6
Publication statusPublished - 2012 Jun


  • MIMO
  • coordinated spatial multiplexing
  • multiuser downlink

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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