Interference Alignment in Two-Cell LTE-Advanced Heterogeneous Networks

Fei YU; Lu TANG; Luxi YANG; Changchun ZHANG; Weiping ZHU

doi:10.1587/transcom.E98.B.126

Interference Alignment in Two-Cell LTE-Advanced Heterogeneous Networks

Fei YU, Lu TANG, Luxi YANG, Changchun ZHANG, Weiping ZHU

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In this paper, we address the issue of interference alignment (IA) in a two-cell network and consider both inter-cell and intra-cell interferences. For cell one, a linear processing scheme is proposed to align the inter-cell interference to the same signal dimension space of intra-cell interference. For cell two, we propose a distributed interference alignment scheme to manage the interference from the nearby cell. We assume that the relay works in an amplify-and-forward (AF) mode with a half-duplex and MIMO relaying. We show that the composite desired and interfering signals aggregated over two time slots can be aligned such that the interfering signal is eliminated completely by applying a linear filter at the receiver. The precoding matrix of the relay is optimized jointly with the precoding matrix of the base station (BS). The number of data streams is optimized jointly for every user terminal (UT). The degree of freedom (DoF) performance of the proposed scheme as well as the conventional cooperation scheme are derived for multiple antennas at both base stations, relay station and user terminals. Simulation results show that the proposed alignment scheme can achieve a better DoF performance.

Publication: IEICE TRANSACTIONS on Communications Vol.E98-B No.1 pp.126-133

Publication Date: 2015/01/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E98.B.126

Type of Manuscript: Special Section PAPER (Special Section on Quality of Diversifying Communication Networks and Services)

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Authors

Fei YU
  Southeast University
Lu TANG
  Southeast University
Luxi YANG
  Southeast University
Changchun ZHANG
  College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications
Weiping ZHU
  Concordia University

Keyword

heterogeneous networks, interference alignment, two-cell, degree-of-freedom

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Fei YU, Lu TANG, Luxi YANG, Changchun ZHANG, Weiping ZHU, "Interference Alignment in Two-Cell LTE-Advanced Heterogeneous Networks" in IEICE TRANSACTIONS on Communications, vol. E98-B, no. 1, pp. 126-133, January 2015, doi: 10.1587/transcom.E98.B.126.
Abstract: In this paper, we address the issue of interference alignment (IA) in a two-cell network and consider both inter-cell and intra-cell interferences. For cell one, a linear processing scheme is proposed to align the inter-cell interference to the same signal dimension space of intra-cell interference. For cell two, we propose a distributed interference alignment scheme to manage the interference from the nearby cell. We assume that the relay works in an amplify-and-forward (AF) mode with a half-duplex and MIMO relaying. We show that the composite desired and interfering signals aggregated over two time slots can be aligned such that the interfering signal is eliminated completely by applying a linear filter at the receiver. The precoding matrix of the relay is optimized jointly with the precoding matrix of the base station (BS). The number of data streams is optimized jointly for every user terminal (UT). The degree of freedom (DoF) performance of the proposed scheme as well as the conventional cooperation scheme are derived for multiple antennas at both base stations, relay station and user terminals. Simulation results show that the proposed alignment scheme can achieve a better DoF performance.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.126/_p

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@ARTICLE{e98-b_1_126,
author={Fei YU, Lu TANG, Luxi YANG, Changchun ZHANG, Weiping ZHU, },
journal={IEICE TRANSACTIONS on Communications},
title={Interference Alignment in Two-Cell LTE-Advanced Heterogeneous Networks},
year={2015},
volume={E98-B},
number={1},
pages={126-133},
abstract={In this paper, we address the issue of interference alignment (IA) in a two-cell network and consider both inter-cell and intra-cell interferences. For cell one, a linear processing scheme is proposed to align the inter-cell interference to the same signal dimension space of intra-cell interference. For cell two, we propose a distributed interference alignment scheme to manage the interference from the nearby cell. We assume that the relay works in an amplify-and-forward (AF) mode with a half-duplex and MIMO relaying. We show that the composite desired and interfering signals aggregated over two time slots can be aligned such that the interfering signal is eliminated completely by applying a linear filter at the receiver. The precoding matrix of the relay is optimized jointly with the precoding matrix of the base station (BS). The number of data streams is optimized jointly for every user terminal (UT). The degree of freedom (DoF) performance of the proposed scheme as well as the conventional cooperation scheme are derived for multiple antennas at both base stations, relay station and user terminals. Simulation results show that the proposed alignment scheme can achieve a better DoF performance.},
keywords={},
doi={10.1587/transcom.E98.B.126},
ISSN={1745-1345},
month={January},}

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TY - JOUR
TI - Interference Alignment in Two-Cell LTE-Advanced Heterogeneous Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 126
EP - 133
AU - Fei YU
AU - Lu TANG
AU - Luxi YANG
AU - Changchun ZHANG
AU - Weiping ZHU
PY - 2015
DO - 10.1587/transcom.E98.B.126
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2015
AB - In this paper, we address the issue of interference alignment (IA) in a two-cell network and consider both inter-cell and intra-cell interferences. For cell one, a linear processing scheme is proposed to align the inter-cell interference to the same signal dimension space of intra-cell interference. For cell two, we propose a distributed interference alignment scheme to manage the interference from the nearby cell. We assume that the relay works in an amplify-and-forward (AF) mode with a half-duplex and MIMO relaying. We show that the composite desired and interfering signals aggregated over two time slots can be aligned such that the interfering signal is eliminated completely by applying a linear filter at the receiver. The precoding matrix of the relay is optimized jointly with the precoding matrix of the base station (BS). The number of data streams is optimized jointly for every user terminal (UT). The degree of freedom (DoF) performance of the proposed scheme as well as the conventional cooperation scheme are derived for multiple antennas at both base stations, relay station and user terminals. Simulation results show that the proposed alignment scheme can achieve a better DoF performance.
ER -