Hierarchical Interference Alignment for Heterogeneous Networks with Multiple Antennas

Shin, Wonjae; Lee, Namyoon; Noh, Wonjong; Choi, Hyun-Ho; Clerckx, Bruno; Shin, Changyong; Jang, Kyunghun

doi:10.1109/iccw.2011.5963547

Cited by 22 publications

(39 citation statements)

References 13 publications

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“…While most of the works on IA have been focused on the multiple-input multiple-output (MIMO) interference networks, it has also been shown that IA can be used to manage the interference in the downlink cellular networks [8]- [12]. In particular, the authors in [13] proposed a novel IA scheme that can offer additional DOF for a heterogeneous network with multiple antennas. However, the proposed scheme in [13] cannot be extended to the general case of the network with multiple cells or users per macrocell straightforwardly since it includes the generalized eigen-problem.…”

Section: Introductionmentioning

confidence: 99%

Linear transceiver design based on interference alignment for MIMO heterogeneous networks

Lee

2012

2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)

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In this paper, we propose a linear transceiver design based on interference alignment (IA) for multiple-input multiple-output (MIMO) heterogeneous networks, which consist of overlaying macrocell and picocells. By exploiting the concept of IA, we show that the proposed transceiver design can mitigate the effect of interference efficiently. We also provide a transceiver design based on IA for additional deployments of femtocells by little modification of the proposed design. From simulation results, we show that the proposed transceiver design can provide additional degrees of freedom (DOF) compared to the conventional interference coordination schemes. Furthermore, we also demonstrate that the proposed transceiver design can be easily generalized to the network with arbitrary number of cells and users per macrocell.

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Section: Introductionmentioning

confidence: 99%

Linear transceiver design based on interference alignment for MIMO heterogeneous networks

Lee

2012

2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)

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“…However, the BS transmits only one data stream to its scheduled user, and homogeneous wireless networks are assumed. For HetNets, the authors in [5], [8] designed the precoders for a hierarchial IA scheme for HetNets. The closed form expressions are found for the systems in which a macrocell with two users coexists with two picocells having one user per cell.…”

Section: Related Workmentioning

confidence: 99%

“…Due to the scarcity of spectrum resources, the small cells are typically designed to reuse the frequency bands of the macrocells. Such an overlaid cell deployment may lead to co-channel interference [4], [5]. Due to simultaneous transmission of multiple cells, HetNets may suffer from interference caused by the cells in the same tier (co-tier interference) and from the cells in different tiers (cross-tier interference) [6].…”

Section: Introductionmentioning

confidence: 99%

Interference Mitigation and Sum Rate Optimization for MIMO Downlink Small Cells

Kha¹

2016

RADIOENGINEERING

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“…One recent and effective solution to deal with interference in two tiered networks is the interference alignment (IA) [21] technique. The concept of IA has emerged as a key approach to align an arbitrary large number of interferers and achieve the maximum degree of freedom (DoF) in wireless networks [22], [23]. In [23] the authors proposed a new interference alignment scheme for heterogeneous networks with multiple antennas.…”

Section: Introductionmentioning

confidence: 99%

“…The concept of IA has emerged as a key approach to align an arbitrary large number of interferers and achieve the maximum degree of freedom (DoF) in wireless networks [22], [23]. In [23] the authors proposed a new interference alignment scheme for heterogeneous networks with multiple antennas. The scheme proposed successively creates transmit beamforming vectors for the small-cell BSs (SBSs) and for the macro BS (MBS) assuming that they have different number of transmit antennas.…”

Section: Introductionmentioning

confidence: 99%