Cooperation resource efficient user-centric clustering for QoS provisioning in uplink CoMP
In this paper, user-centric clustering for uplink coordinated multi-point (CoMP) processing in a multi-cell environment is investigated such that the inter-cell interference (ICI) within cluster can be effectively eliminated. Although full cooperation among all cells in the network can achieve the h...
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| Vydáno v: | SPAWC : signal processing advances in wireless communications s. 1 - 5 |
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01.07.2017
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| ISSN: | 1948-3252 |
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| Abstract | In this paper, user-centric clustering for uplink coordinated multi-point (CoMP) processing in a multi-cell environment is investigated such that the inter-cell interference (ICI) within cluster can be effectively eliminated. Although full cooperation among all cells in the network can achieve the highest cooperative gain in terms of ICI cancellation, such scheme consumes too much cooperation resources in the form of backhaul and processing power. In addition, from the quality-of-service (QoS) provisioning perspective, different users may have different demand for CoMP processing to guarantee its QoS. By considering the tradeoff between cooperative gain and cost, a cluster size minimization problem subject to QoS constraints is formulated to achieve dynamic user-centric clustering for uplink CoMP. As the constrained 0-1 integer programming problem depends largely on the intra-cluster interference weight, we propose a subgradient-based algorithm to solve the relaxed problem. Simulation results demonstrate that the proposed clustering algorithm achieves both the smallest cluster size and the best QoS provisioning for cell-edge users in terms of outage probability in the comparison with existing clustering algorithms. |
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| AbstractList | In this paper, user-centric clustering for uplink coordinated multi-point (CoMP) processing in a multi-cell environment is investigated such that the inter-cell interference (ICI) within cluster can be effectively eliminated. Although full cooperation among all cells in the network can achieve the highest cooperative gain in terms of ICI cancellation, such scheme consumes too much cooperation resources in the form of backhaul and processing power. In addition, from the quality-of-service (QoS) provisioning perspective, different users may have different demand for CoMP processing to guarantee its QoS. By considering the tradeoff between cooperative gain and cost, a cluster size minimization problem subject to QoS constraints is formulated to achieve dynamic user-centric clustering for uplink CoMP. As the constrained 0-1 integer programming problem depends largely on the intra-cluster interference weight, we propose a subgradient-based algorithm to solve the relaxed problem. Simulation results demonstrate that the proposed clustering algorithm achieves both the smallest cluster size and the best QoS provisioning for cell-edge users in terms of outage probability in the comparison with existing clustering algorithms. |
| Author | Wong, Kon Max Xiaomin Mu Zhe Zhang Jiankang Zhang Ning Wang |
| Author_xml | – sequence: 1 surname: Zhe Zhang fullname: Zhe Zhang organization: Sch. of Inf. Eng., Zhengzhou Univ. Zhengzhou, Zhengzhou, China – sequence: 2 surname: Ning Wang fullname: Ning Wang organization: Sch. of Inf. Eng., Zhengzhou Univ. Zhengzhou, Zhengzhou, China – sequence: 3 surname: Jiankang Zhang fullname: Jiankang Zhang organization: Sch. of Inf. Eng., Zhengzhou Univ. Zhengzhou, Zhengzhou, China – sequence: 4 surname: Xiaomin Mu fullname: Xiaomin Mu organization: Sch. of Inf. Eng., Zhengzhou Univ. Zhengzhou, Zhengzhou, China – sequence: 5 givenname: Kon Max surname: Wong fullname: Wong, Kon Max organization: Sch. of Inf. Eng., Zhengzhou Univ. Zhengzhou, Zhengzhou, China |
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| Snippet | In this paper, user-centric clustering for uplink coordinated multi-point (CoMP) processing in a multi-cell environment is investigated such that the... |
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| SubjectTerms | Clustering algorithms Interference Linear programming Minimization Quality of service Signal processing algorithms Uplink |
| Title | Cooperation resource efficient user-centric clustering for QoS provisioning in uplink CoMP |
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