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Scalable coordinated beamforming for dense wireless cooperative networks | |
2014-12 | |
会议录名称 | IEEE GLOBAL COMMUNICATIONS CONFERENCE |
发表状态 | 已发表 |
DOI | 10.1109/GLOCOM.2014.7037367 |
摘要 | To meet the ever growing demand for both high throughput and uniform coverage in future wireless networks, dense network deployment will be ubiquitous, for which cooperation among the access points is critical. Considering the computational complexity of designing coordinated beamformers for dense networks, low-complexity and suboptimal precoding strategies are often adopted. However, it is not clear how much performance loss will be caused. To enable optimal coordinated beamforming, in this paper, we propose a framework to design a scalable beamforming algorithm based on the alternative direction method of multipliers (ADMM). Specifically, we first propose to apply the matrix stuffing technique to transform the original optimization problem to an equivalent ADMM-compliant problem, which is much more efficient than the widely-used modeling framework CVX. We will then propose to use the ADMM algorithm, a.k.a. the operator splitting method, to solve the transformed ADMM-compliant problem efficiently. In particular, the subproblems of the ADMM algorithm at each iteration can be solved with closed-forms and in parallel. Simulation results show that the proposed techniques can result in significant computational efficiency compared to the state-of-the-art interior-point solvers. Furthermore, the simulation results demonstrate that the optimal coordinated beamforming can significantly improve the system performance compared to sub-optimal zero forcing beamforming. |
关键词 | Array Signal Processing , Optimization , Wireless Communication , Algorithm Design And Analysis , Signal Processing Algorithms , Transforms , Computational Complexity |
URL | 查看原文 ; 查看原文 |
收录类别 | EI |
语种 | 英语 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/29620 |
专题 | 个人在本单位外知识产出 |
通讯作者 | Shi, Yuanming |
作者单位 | Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology |
推荐引用方式 GB/T 7714 | Shi, Yuanming,Zhang, Jun,Letaief, Khaled B.. Scalable coordinated beamforming for dense wireless cooperative networks[C],2014. |
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