On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays

Kihong Park; Mohamed-Slim Alouini; Seongho Park; Youngchai Ko

doi:10.1109/ComNet.2012.6217739

On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays

Kihong Park, Mohamed-Slim Alouini, Seongho Park, Youngchai Ko

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

In this paper, we consider a two-hop relaying network where one source, one destination, and multiple amplify-and-forward (AF) relays equipped with M antennas operate in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor of 1/2 due to half-duplex relaying, we propose a new transmission protocol which combines alternate relaying and inter-relay interference alignment. We prove that the proposed scheme can (i) exploits M degrees of freedom (DOFs) and (ii) perfectly recover the pre-log factor loss if the number of relays is at least six. From our selected numerical results, we show that our proposed scheme gives significant improvement over conventional AF relaying which offers only M/2 DOFs. © 2012 IEEE.

Original language	English (US)
Title of host publication	Third International Conference on Communications and Networking
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)	9781467310079
DOIs	https://doi.org/10.1109/ComNet.2012.6217739
State	Published - Mar 2012

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KAUST Repository Item: Exported on 2020-10-01

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10.1109/ComNet.2012.6217739

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title = "On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays",

abstract = "In this paper, we consider a two-hop relaying network where one source, one destination, and multiple amplify-and-forward (AF) relays equipped with M antennas operate in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor of 1/2 due to half-duplex relaying, we propose a new transmission protocol which combines alternate relaying and inter-relay interference alignment. We prove that the proposed scheme can (i) exploits M degrees of freedom (DOFs) and (ii) perfectly recover the pre-log factor loss if the number of relays is at least six. From our selected numerical results, we show that our proposed scheme gives significant improvement over conventional AF relaying which offers only M/2 DOFs. {\textcopyright} 2012 IEEE.",

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T1 - On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays

AU - Park, Kihong

AU - Alouini, Mohamed-Slim

AU - Park, Seongho

AU - Ko, Youngchai

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2012/3

Y1 - 2012/3

N2 - In this paper, we consider a two-hop relaying network where one source, one destination, and multiple amplify-and-forward (AF) relays equipped with M antennas operate in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor of 1/2 due to half-duplex relaying, we propose a new transmission protocol which combines alternate relaying and inter-relay interference alignment. We prove that the proposed scheme can (i) exploits M degrees of freedom (DOFs) and (ii) perfectly recover the pre-log factor loss if the number of relays is at least six. From our selected numerical results, we show that our proposed scheme gives significant improvement over conventional AF relaying which offers only M/2 DOFs. © 2012 IEEE.

AB - In this paper, we consider a two-hop relaying network where one source, one destination, and multiple amplify-and-forward (AF) relays equipped with M antennas operate in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor of 1/2 due to half-duplex relaying, we propose a new transmission protocol which combines alternate relaying and inter-relay interference alignment. We prove that the proposed scheme can (i) exploits M degrees of freedom (DOFs) and (ii) perfectly recover the pre-log factor loss if the number of relays is at least six. From our selected numerical results, we show that our proposed scheme gives significant improvement over conventional AF relaying which offers only M/2 DOFs. © 2012 IEEE.

UR - http://hdl.handle.net/10754/564531

UR - http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6217739

UR - http://www.scopus.com/inward/record.url?scp=84863682078&partnerID=8YFLogxK

U2 - 10.1109/ComNet.2012.6217739

DO - 10.1109/ComNet.2012.6217739

M3 - Conference contribution

SN - 9781467310079

BT - Third International Conference on Communications and Networking

PB - Institute of Electrical and Electronics Engineers (IEEE)

ER -

On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays

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