Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/202881
Title: Low Complexity Interference Alignment for mmWave MIMO Channels in Three-Cell Mobile Network
Authors: Chaowei Wang;Cai Qin;Yuan Yao;Yong Li;Weidong Wang
Year: 2017
Publisher: IEEE
Abstract: Millimeter wave (mmWave) communications are an important candidate technique in 5G networks for features, supporting ultra-dense small cells and mobile data offloading. However, ultra-dense nodes and increasing data traffic bring in vast interference. This paper investigates low complexity non-iterative interference alignment (IA) schemes for multiple-input multiple-output (MIMO) interference broadcast channels in mmWave communications. The authors focus on the three-cell mobile network model in which each base station supports no more than two users within its cell. There is already a closed-form IA solution for the case that one cell has two users, while the other two have one user in each, which can be denoted as {2,1,1}. This paper considers different settings and proposes corresponding IA schemes. First, two IA schemes based on multi-step for the asymmetric setting {2,2,1} are presented, five degree of freedom (DoF) could be achieved. Then, for the symmetric setting {2,2,2}, a novel IA solution with lower complexity and a joint method combining IA with non-iterative multi-user MIMO technique are proposed, and they can achieve six DoF. The simulation results indicate that our non-iterative schemes have similar sum-rate capacity performances with the iterative ones in existing work, and the complexity is effectively reduced.
URI: http://localhost/handle/Hannan/202881
volume: 35
issue: 7
More Information: 1513,
1523
Appears in Collections:2017

Files in This Item:
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7913619.pdf1.28 MBAdobe PDF
Title: Low Complexity Interference Alignment for mmWave MIMO Channels in Three-Cell Mobile Network
Authors: Chaowei Wang;Cai Qin;Yuan Yao;Yong Li;Weidong Wang
Year: 2017
Publisher: IEEE
Abstract: Millimeter wave (mmWave) communications are an important candidate technique in 5G networks for features, supporting ultra-dense small cells and mobile data offloading. However, ultra-dense nodes and increasing data traffic bring in vast interference. This paper investigates low complexity non-iterative interference alignment (IA) schemes for multiple-input multiple-output (MIMO) interference broadcast channels in mmWave communications. The authors focus on the three-cell mobile network model in which each base station supports no more than two users within its cell. There is already a closed-form IA solution for the case that one cell has two users, while the other two have one user in each, which can be denoted as {2,1,1}. This paper considers different settings and proposes corresponding IA schemes. First, two IA schemes based on multi-step for the asymmetric setting {2,2,1} are presented, five degree of freedom (DoF) could be achieved. Then, for the symmetric setting {2,2,2}, a novel IA solution with lower complexity and a joint method combining IA with non-iterative multi-user MIMO technique are proposed, and they can achieve six DoF. The simulation results indicate that our non-iterative schemes have similar sum-rate capacity performances with the iterative ones in existing work, and the complexity is effectively reduced.
URI: http://localhost/handle/Hannan/202881
volume: 35
issue: 7
More Information: 1513,
1523
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7913619.pdf1.28 MBAdobe PDF
Title: Low Complexity Interference Alignment for mmWave MIMO Channels in Three-Cell Mobile Network
Authors: Chaowei Wang;Cai Qin;Yuan Yao;Yong Li;Weidong Wang
Year: 2017
Publisher: IEEE
Abstract: Millimeter wave (mmWave) communications are an important candidate technique in 5G networks for features, supporting ultra-dense small cells and mobile data offloading. However, ultra-dense nodes and increasing data traffic bring in vast interference. This paper investigates low complexity non-iterative interference alignment (IA) schemes for multiple-input multiple-output (MIMO) interference broadcast channels in mmWave communications. The authors focus on the three-cell mobile network model in which each base station supports no more than two users within its cell. There is already a closed-form IA solution for the case that one cell has two users, while the other two have one user in each, which can be denoted as {2,1,1}. This paper considers different settings and proposes corresponding IA schemes. First, two IA schemes based on multi-step for the asymmetric setting {2,2,1} are presented, five degree of freedom (DoF) could be achieved. Then, for the symmetric setting {2,2,2}, a novel IA solution with lower complexity and a joint method combining IA with non-iterative multi-user MIMO technique are proposed, and they can achieve six DoF. The simulation results indicate that our non-iterative schemes have similar sum-rate capacity performances with the iterative ones in existing work, and the complexity is effectively reduced.
URI: http://localhost/handle/Hannan/202881
volume: 35
issue: 7
More Information: 1513,
1523
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7913619.pdf1.28 MBAdobe PDF