Alternate transmission relaying based on interference alignment in 3-relay half-duplex MIMO systems

Seong Ho Park; Ki Hong Park; Young Chai Ko; Mohamed Slim Alouini

doi:10.1109/JSAC.2012.120908

Alternate transmission relaying based on interference alignment in 3-relay half-duplex MIMO systems

Seong Ho Park^*
, Ki Hong Park
, Young Chai Ko
, Mohamed Slim Alouini

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

In a half-duplex relaying, the capacity pre-log factor 1/2 is a major drawback in spectral efficiency. This paper proposes a linear precoding/decoding scheme and an alternate relaying protocol in a dual-hop half-duplex system where three relays help the communication between the source and the destination. In our proposed scheme, we consider a phase incoherent method in relays in which the source alternately transmits message signals to the different relays. In addition, we propose a linear interference alignment scheme which can suppress the inter-relay interference resulting from the phase incoherence of relaying. Based on our analysis of degrees of freedom and our simulation results, we show that our proposed scheme achieves additional degrees of freedom compared to the conventional half-duplex relaying.

Original language	English
Article number	6280245
Pages (from-to)	1383-1389
Number of pages	7
Journal	IEEE Journal on Selected Areas in Communications
Volume	30
Issue number	8
DOIs	https://doi.org/10.1109/JSAC.2012.120908
Publication status	Published - 2012

Bibliographical note

Funding Information:
Manuscript received 29 August 2011; revised 1 March 2012. This research was supported in part by the KCC(Korea Communications Commission), Korea, under the R&D program supervised by the KCA(Korea Communications Agency) (KCA-2011-08913-04002), is funded in part by Korea University and is funded in part by King Abdullah University of Science and Technology. This is an expanded version of work which was presented at the International Conference on Information, Communications, and Signal Processing (ICICS 2011), Singapore, December 2011.

Keywords

Relay channel
alternate transmission
and phase incoherence
decode-and-forward
degrees of freedom
half-duplex
interference alignment

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

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10.1109/JSAC.2012.120908

Cite this

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title = "Alternate transmission relaying based on interference alignment in 3-relay half-duplex MIMO systems",

abstract = "In a half-duplex relaying, the capacity pre-log factor 1/2 is a major drawback in spectral efficiency. This paper proposes a linear precoding/decoding scheme and an alternate relaying protocol in a dual-hop half-duplex system where three relays help the communication between the source and the destination. In our proposed scheme, we consider a phase incoherent method in relays in which the source alternately transmits message signals to the different relays. In addition, we propose a linear interference alignment scheme which can suppress the inter-relay interference resulting from the phase incoherence of relaying. Based on our analysis of degrees of freedom and our simulation results, we show that our proposed scheme achieves additional degrees of freedom compared to the conventional half-duplex relaying.",

keywords = "Relay channel, alternate transmission, and phase incoherence, decode-and-forward, degrees of freedom, half-duplex, interference alignment",

author = "Park, \{Seong Ho\} and Park, \{Ki Hong\} and Ko, \{Young Chai\} and Alouini, \{Mohamed Slim\}",

note = "Funding Information: Manuscript received 29 August 2011; revised 1 March 2012. This research was supported in part by the KCC(Korea Communications Commission), Korea, under the R\&D program supervised by the KCA(Korea Communications Agency) (KCA-2011-08913-04002), is funded in part by Korea University and is funded in part by King Abdullah University of Science and Technology. This is an expanded version of work which was presented at the International Conference on Information, Communications, and Signal Processing (ICICS 2011), Singapore, December 2011.",

year = "2012",

doi = "10.1109/JSAC.2012.120908",

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N1 - Funding Information: Manuscript received 29 August 2011; revised 1 March 2012. This research was supported in part by the KCC(Korea Communications Commission), Korea, under the R&D program supervised by the KCA(Korea Communications Agency) (KCA-2011-08913-04002), is funded in part by Korea University and is funded in part by King Abdullah University of Science and Technology. This is an expanded version of work which was presented at the International Conference on Information, Communications, and Signal Processing (ICICS 2011), Singapore, December 2011.

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N2 - In a half-duplex relaying, the capacity pre-log factor 1/2 is a major drawback in spectral efficiency. This paper proposes a linear precoding/decoding scheme and an alternate relaying protocol in a dual-hop half-duplex system where three relays help the communication between the source and the destination. In our proposed scheme, we consider a phase incoherent method in relays in which the source alternately transmits message signals to the different relays. In addition, we propose a linear interference alignment scheme which can suppress the inter-relay interference resulting from the phase incoherence of relaying. Based on our analysis of degrees of freedom and our simulation results, we show that our proposed scheme achieves additional degrees of freedom compared to the conventional half-duplex relaying.

AB - In a half-duplex relaying, the capacity pre-log factor 1/2 is a major drawback in spectral efficiency. This paper proposes a linear precoding/decoding scheme and an alternate relaying protocol in a dual-hop half-duplex system where three relays help the communication between the source and the destination. In our proposed scheme, we consider a phase incoherent method in relays in which the source alternately transmits message signals to the different relays. In addition, we propose a linear interference alignment scheme which can suppress the inter-relay interference resulting from the phase incoherence of relaying. Based on our analysis of degrees of freedom and our simulation results, we show that our proposed scheme achieves additional degrees of freedom compared to the conventional half-duplex relaying.

KW - Relay channel

KW - alternate transmission

KW - and phase incoherence

KW - decode-and-forward

KW - degrees of freedom

KW - half-duplex

KW - interference alignment

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Alternate transmission relaying based on interference alignment in 3-relay half-duplex MIMO systems

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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