Achieving the degrees of freedom of relay-aided interference broadcast channels

Dan Wu; Chenyang Yang; Tingting Liu; Zixiang Xiong

doi:10.1109/ICASSP.2012.6288505

Achieving the degrees of freedom of relay-aided interference broadcast channels

Dan Wu, Chenyang Yang, Tingting Liu, Zixiang Xiong

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

This paper studies the degrees of freedom (DoF) of relay-aided interference broadcast channels and the relay resource to achieve them. We show that, with the aid of half-duplex relays, a G-cell system can achieve GM _BS/2 DoF, where M _BS is the number of transmit antennas in each cell. By studying the interference-free constraints, we obtain a lower bound of the relay resource that ensures interference-free transmission. Instead of directly solving the complicated multivariate problem with cubic interference-free constraints, we propose to relax the problem to linear equations by randomly initiating certain variables, and derive an achievable bound on relay resource. Numerical results show that the relay-aided interference broadcast channels require less relay resource than relay-aided interference channels and transmission protocol has large impact on the required resources.

Original language	English
Title of host publication	2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
Publisher	IEEE, Institute of Electrical and Electronics Engineers
Pages	2825-2828
Number of pages	4
ISBN (Print)	9781467300469
DOIs	https://doi.org/10.1109/ICASSP.2012.6288505
Publication status	Published - 2012
Externally published	Yes
Event	IEEE International Conference on Acoustics, Speech and Signal Processing 2012 - Kyoto International Conference Center, Kyoto, Japan Duration: 25 Mar 2012 → 30 Mar 2012 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6268628 (Conference Proceedings)

Conference

Conference	IEEE International Conference on Acoustics, Speech and Signal Processing 2012
Abbreviated title	ICASSP 2012
Country/Territory	Japan
City	Kyoto
Period	25/03/12 → 30/03/12
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6268628 (Conference Proceedings)

Keywords

degrees of freedom
relay resource
relay-aided interference broadcast channel

Access to Document

10.1109/ICASSP.2012.6288505

Cite this

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abstract = "This paper studies the degrees of freedom (DoF) of relay-aided interference broadcast channels and the relay resource to achieve them. We show that, with the aid of half-duplex relays, a G-cell system can achieve GM BS/2 DoF, where M BS is the number of transmit antennas in each cell. By studying the interference-free constraints, we obtain a lower bound of the relay resource that ensures interference-free transmission. Instead of directly solving the complicated multivariate problem with cubic interference-free constraints, we propose to relax the problem to linear equations by randomly initiating certain variables, and derive an achievable bound on relay resource. Numerical results show that the relay-aided interference broadcast channels require less relay resource than relay-aided interference channels and transmission protocol has large impact on the required resources.",

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author = "Dan Wu and Chenyang Yang and Tingting Liu and Zixiang Xiong",

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publisher = "IEEE, Institute of Electrical and Electronics Engineers",

address = "United States of America",

note = "IEEE International Conference on Acoustics, Speech and Signal Processing 2012, ICASSP 2012 ; Conference date: 25-03-2012 Through 30-03-2012",

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Wu, D, Yang, C, Liu, T & Xiong, Z 2012, Achieving the degrees of freedom of relay-aided interference broadcast channels. in 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, pp. 2825-2828, IEEE International Conference on Acoustics, Speech and Signal Processing 2012, Kyoto, Japan, 25/03/12. https://doi.org/10.1109/ICASSP.2012.6288505

Achieving the degrees of freedom of relay-aided interference broadcast channels. / Wu, Dan; Yang, Chenyang; Liu, Tingting et al.
2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, 2012. p. 2825-2828.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

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AB - This paper studies the degrees of freedom (DoF) of relay-aided interference broadcast channels and the relay resource to achieve them. We show that, with the aid of half-duplex relays, a G-cell system can achieve GM BS/2 DoF, where M BS is the number of transmit antennas in each cell. By studying the interference-free constraints, we obtain a lower bound of the relay resource that ensures interference-free transmission. Instead of directly solving the complicated multivariate problem with cubic interference-free constraints, we propose to relax the problem to linear equations by randomly initiating certain variables, and derive an achievable bound on relay resource. Numerical results show that the relay-aided interference broadcast channels require less relay resource than relay-aided interference channels and transmission protocol has large impact on the required resources.

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Achieving the degrees of freedom of relay-aided interference broadcast channels

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