MIMO precoder selections in decode-forward relay networks with finite feedback

Duckdong Hwang; Junil Choi; Bruno Clerckx; Gil Kim

doi:10.1109/TCOMM.2011.050911.100003

MIMO precoder selections in decode-forward relay networks with finite feedback

Duckdong Hwang, Junil Choi, Bruno Clerckx, Gil Kim

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

4 Citations (Scopus)

Abstract

We consider a system with precoding in the half duplex Decode-Forward (DF) relay networks, where multiple antennas are adopted at the source, the destination and the relay. Based on the channel state information (CSI), a few feedback bits are fed back from the destination to the source and the relay to select the source and the relay precoders. A suboptimal precoder selection criterion for the symbol vector error minimization and an optimal precoder selection criterion for the capacity maximization are proposed for the practical situation where relays are placed between the source and the destination. We analyze the diversity performance of the criteria and show that the full diversity is achieved when the rank one precoder sets span the vector channel space formed by the transmit antennas of the source and the those of the relay.

Original language	English
Article number	5771500
Pages (from-to)	1785-1790
Number of pages	6
Journal	IEEE Transactions on Communications
Volume	59
Issue number	7
DOIs	https://doi.org/10.1109/TCOMM.2011.050911.100003
Publication status	Published - 2011 Jul

Bibliographical note

Funding Information:
Paper approved by D. L. Goeckel, the Editor for Space-Time and OFDM of the IEEE Communications Society. Manuscript received January 11, 2010; revised July 12, 2010, October 19, 2010, and February 16, 2010. the authors are with Samsung Electronics Co. (e-mail: [email protected]). This work is supported by Samsung Electronics Co. Digital Object Identifier 10.1109/TCOMM.2011.050911.100003

Keywords

DF relay network
MIMO
codebook
diversity
precoder selection

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TCOMM.2011.050911.100003

Cite this

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abstract = "We consider a system with precoding in the half duplex Decode-Forward (DF) relay networks, where multiple antennas are adopted at the source, the destination and the relay. Based on the channel state information (CSI), a few feedback bits are fed back from the destination to the source and the relay to select the source and the relay precoders. A suboptimal precoder selection criterion for the symbol vector error minimization and an optimal precoder selection criterion for the capacity maximization are proposed for the practical situation where relays are placed between the source and the destination. We analyze the diversity performance of the criteria and show that the full diversity is achieved when the rank one precoder sets span the vector channel space formed by the transmit antennas of the source and the those of the relay.",

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N2 - We consider a system with precoding in the half duplex Decode-Forward (DF) relay networks, where multiple antennas are adopted at the source, the destination and the relay. Based on the channel state information (CSI), a few feedback bits are fed back from the destination to the source and the relay to select the source and the relay precoders. A suboptimal precoder selection criterion for the symbol vector error minimization and an optimal precoder selection criterion for the capacity maximization are proposed for the practical situation where relays are placed between the source and the destination. We analyze the diversity performance of the criteria and show that the full diversity is achieved when the rank one precoder sets span the vector channel space formed by the transmit antennas of the source and the those of the relay.

AB - We consider a system with precoding in the half duplex Decode-Forward (DF) relay networks, where multiple antennas are adopted at the source, the destination and the relay. Based on the channel state information (CSI), a few feedback bits are fed back from the destination to the source and the relay to select the source and the relay precoders. A suboptimal precoder selection criterion for the symbol vector error minimization and an optimal precoder selection criterion for the capacity maximization are proposed for the practical situation where relays are placed between the source and the destination. We analyze the diversity performance of the criteria and show that the full diversity is achieved when the rank one precoder sets span the vector channel space formed by the transmit antennas of the source and the those of the relay.

KW - DF relay network

KW - MIMO

KW - codebook

KW - diversity

KW - precoder selection

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MIMO precoder selections in decode-forward relay networks with finite feedback

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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