Dynamic Nested Clustering for Parallel PHY-Layer Processing in Cloud-RANs

doi:10.1109/TWC.2015.2496953

	Dynamic Nested Clustering for Parallel PHY-Layer Processing in Cloud-RANs
	Congmin Fan 1; Ying Jun Zhang 2; Xiaojun Yuan3
	2016-03
发表期刊	IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
ISSN	1536-1276
卷号	15 期号:3 页码:1881-1894
发表状态	已发表
DOI	10.1109/TWC.2015.2496953
摘要	Featured by centralized processing and cloud based infrastructure, Cloud Radio Access Network (C-RAN) is a promising solution to achieving an unprecedented system capacity in future wireless cellular networks. The huge capacity gain mainly comes from the centralized and coordinated signal processing at the cloud server. However, full-scale coordination in a large-scale C-RAN requires the processing of very large channel matrices, leading to high computational complexity and channel estimation overhead. To tackle this challenge, we establish a unified theoretical framework for dynamic clustering by exploiting the near-sparsity of large C-RAN channel matrices. Based on this framework, we propose a dynamic nested clustering (DNC) algorithm that greatly improves the system scalability in terms of baseband-processing and channel-estimation complexity. With the proposed DNC algorithm, we show that the computational complexity (i.e., the computation time with serial processing) for the optimal linear detector is significantly reduced from O(N-3) to O(N-2), where N is the number of remote radio heads (RRHs) in the C-RAN. Moreover, the proposed DNC algorithm is also amenable to parallel processing, which further reduces the computation time to O(N-42/23).
关键词	Cloud-RAN dynamic clustering parallel processing
URL	查看原文
收录类别	SCI ; EI
语种	英语
资助项目	Research Grants Council of Hong Kong[2150828] ; Research Grants Council of Hong Kong[2150876]
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000372627500020
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
EI入藏号	20161602272880
EI主题词	Channel estimation ; Complex networks ; Computational complexity ; Matrix algebra ; Signal processing
EI分类号	Information Theory and Signal Processing:716.1 ; Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory:721.1 ; Computer Systems and Equipment:722 ; Information Sources and Analysis:903.1 ; Algebra:921.1
WOS关键词	BLOCK DIAGONALIZATION ; NETWORKS ; INTERFERENCE ; MIMO ; POWER
原始文献类型	Article
来源库	IEEE
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1910
专题	信息科学与技术学院信息科学与技术学院_PI研究组_袁晓军组
作者单位	1.Department of Information Engineering, The Chinese University of Hong Kong, Hong Kong 2.Shenzhen Research Institute, The Chinese University of Hong Kong 3.School of Information Science and Technology, ShanghaiTech University, Shanghai, China
推荐引用方式 GB/T 7714	Congmin Fan,Ying Jun Zhang,Xiaojun Yuan. Dynamic Nested Clustering for Parallel PHY-Layer Processing in Cloud-RANs[J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,2016,15(3):1881-1894.
APA	Congmin Fan,Ying Jun Zhang,&Xiaojun Yuan.(2016).Dynamic Nested Clustering for Parallel PHY-Layer Processing in Cloud-RANs.IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,15(3),1881-1894.
MLA	Congmin Fan,et al."Dynamic Nested Clustering for Parallel PHY-Layer Processing in Cloud-RANs".IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 15.3(2016):1881-1894.