Sum-rate maximization for two-way MIMO amplify-and-forward relaying systems

Kyoung Jae Lee; Kwang Won Lee; Hakjea Sung; Inkyu Lee

doi:10.1109/VETECS.2009.5073868

Sum-rate maximization for two-way MIMO amplify-and-forward relaying systems

Kyoung Jae Lee^*
, Kwang Won Lee
, Hakjea Sung
, Inkyu Lee

^*Corresponding author for this work

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

62 Citations (Scopus)

Abstract

This paper considers two-way relaying systems with a multiple-input multiple-output (MIMO) relay between two MIMO terminal nodes. The two-way relaying protocol can enhance the spectral efficiency compared with the one-way protocol by compensating the loss from half-duplex signaling. In this paper, we propose an iterative scheme to find a relay weighting matrix maximizing the sum-rate for two-way relay channels. Due to the non-convexity of the given problem, the proposed scheme iteratively identifies a local optimal solution by deriving the gradient of the sum-rate and applying the gradient descent algorithm. Simulation results show that the proposed iterative scheme with provable convergence achieves a near-optimal sum-rate for the two-way MIMO relay channels. Also, we show that the proposed scheme with a few iterations still outperforms the conventional schemes.

Original language	English
Title of host publication	VTC Spring 2009 - IEEE 69th Vehicular Technology Conference
DOIs	https://doi.org/10.1109/VETECS.2009.5073868
Publication status	Published - 2009
Event	VTC Spring 2009 - IEEE 69th Vehicular Technology Conference - Barcelona, Spain Duration: 2009 Apr 26 → 2009 Apr 29

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Other

Other	VTC Spring 2009 - IEEE 69th Vehicular Technology Conference
Country/Territory	Spain
City	Barcelona
Period	09/4/26 → 09/4/29

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/VETECS.2009.5073868

Cite this

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title = "Sum-rate maximization for two-way MIMO amplify-and-forward relaying systems",

abstract = "This paper considers two-way relaying systems with a multiple-input multiple-output (MIMO) relay between two MIMO terminal nodes. The two-way relaying protocol can enhance the spectral efficiency compared with the one-way protocol by compensating the loss from half-duplex signaling. In this paper, we propose an iterative scheme to find a relay weighting matrix maximizing the sum-rate for two-way relay channels. Due to the non-convexity of the given problem, the proposed scheme iteratively identifies a local optimal solution by deriving the gradient of the sum-rate and applying the gradient descent algorithm. Simulation results show that the proposed iterative scheme with provable convergence achieves a near-optimal sum-rate for the two-way MIMO relay channels. Also, we show that the proposed scheme with a few iterations still outperforms the conventional schemes.",

author = "Lee, \{Kyoung Jae\} and Lee, \{Kwang Won\} and Hakjea Sung and Inkyu Lee",

year = "2009",

doi = "10.1109/VETECS.2009.5073868",

language = "English",

isbn = "9781424425174",

series = "IEEE Vehicular Technology Conference",

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note = "VTC Spring 2009 - IEEE 69th Vehicular Technology Conference ; Conference date: 26-04-2009 Through 29-04-2009",

}

TY - GEN

T1 - Sum-rate maximization for two-way MIMO amplify-and-forward relaying systems

AU - Lee, Kyoung Jae

AU - Lee, Kwang Won

AU - Sung, Hakjea

AU - Lee, Inkyu

PY - 2009

Y1 - 2009

N2 - This paper considers two-way relaying systems with a multiple-input multiple-output (MIMO) relay between two MIMO terminal nodes. The two-way relaying protocol can enhance the spectral efficiency compared with the one-way protocol by compensating the loss from half-duplex signaling. In this paper, we propose an iterative scheme to find a relay weighting matrix maximizing the sum-rate for two-way relay channels. Due to the non-convexity of the given problem, the proposed scheme iteratively identifies a local optimal solution by deriving the gradient of the sum-rate and applying the gradient descent algorithm. Simulation results show that the proposed iterative scheme with provable convergence achieves a near-optimal sum-rate for the two-way MIMO relay channels. Also, we show that the proposed scheme with a few iterations still outperforms the conventional schemes.

AB - This paper considers two-way relaying systems with a multiple-input multiple-output (MIMO) relay between two MIMO terminal nodes. The two-way relaying protocol can enhance the spectral efficiency compared with the one-way protocol by compensating the loss from half-duplex signaling. In this paper, we propose an iterative scheme to find a relay weighting matrix maximizing the sum-rate for two-way relay channels. Due to the non-convexity of the given problem, the proposed scheme iteratively identifies a local optimal solution by deriving the gradient of the sum-rate and applying the gradient descent algorithm. Simulation results show that the proposed iterative scheme with provable convergence achieves a near-optimal sum-rate for the two-way MIMO relay channels. Also, we show that the proposed scheme with a few iterations still outperforms the conventional schemes.

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U2 - 10.1109/VETECS.2009.5073868

DO - 10.1109/VETECS.2009.5073868

M3 - Conference contribution

AN - SCOPUS:70349705532

SN - 9781424425174

T3 - IEEE Vehicular Technology Conference

BT - VTC Spring 2009 - IEEE 69th Vehicular Technology Conference

T2 - VTC Spring 2009 - IEEE 69th Vehicular Technology Conference

Y2 - 26 April 2009 through 29 April 2009

ER -

Sum-rate maximization for two-way MIMO amplify-and-forward relaying systems

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