Coordinated spatial multiplexing with orthogonalized channels for multiuser MIMO downlink systems

Jin Sung Kim; Sung Hyun Moon; Inkyu Lee

doi:10.1109/TWC.2012.032712.111009

Coordinated spatial multiplexing with orthogonalized channels for multiuser MIMO downlink systems

Jin Sung Kim, Sung Hyun Moon, Inkyu Lee

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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 language	English
Article number	6177988
Pages (from-to)	1996-2001
Number of pages	6
Journal	IEEE Transactions on Wireless Communications
Volume	11
Issue number	6
DOIs	https://doi.org/10.1109/TWC.2012.032712.111009
Publication status	Published - 2012 Jun

Bibliographical note

Funding Information:
Manuscript received May 27, 2011; revised November 15, 2011; accepted February 2, 2012. The associate editor coordinating the review of this letter and approving it for publication was M. Tao. J.-S. Kim was with the School of Electrical Engineering, Korea University, Seoul, Korea. He is now with the Bell Labs Seoul Ltd., Seoul, Korea (e-mail: jin_sung.kim@alcatel-lucent.com). S.-H. Moon was with the School of Electrical Engineering, Korea University, Seoul, Korea. He is now with the Electronics and Telecommunications Research Institute (ETRI), Daejeon, Korea (e-mail: sh.moon@etri.re.kr). I. Lee is with the School of Electrical Engineering, Korea University, Seoul, Korea (e-mail: inkyu@korea.ac.kr). This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2010-0017909). The material in this paper was presented in part at IEEE Globecom, Dec. 2009. Digital Object Identifier 10.1109/TWC.2012.032712.111009

Keywords

MIMO
coordinated spatial multiplexing
multiuser downlink

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/TWC.2012.032712.111009

Cite this

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abstract = "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.",

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Coordinated spatial multiplexing with orthogonalized channels for multiuser MIMO downlink systems

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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