Backhaul-Constrained Multicell Cooperation Leveraging Sparsity and Spectral Clustering

Swayambhoo Jain, Seung Jun Kim, Georgios B. Giannakis

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Multicell cooperative processing with limited backhaul traffic is studied for cellular uplinks. Aiming at reduced backhaul overhead, a sparse multicell linear receive-filter design problem is formulated. Both unstructured distributed cooperation and clustered cooperation, in which base station groups are formed for tight cooperation, are considered. Dynamic clustered cooperation, where the sparse equalizer and the cooperation clusters are jointly determined, is solved via alternating minimization based on spectral clustering and group-sparse regression. Furthermore, decentralized implementations of both unstructured and clustered cooperation schemes are developed for scalability, robustness, and computational efficiency. Extensive numerical tests verify the efficacy of the proposed methods.

Original languageEnglish (US)
Article number7273957
Pages (from-to)899-912
Number of pages14
JournalIEEE Transactions on Wireless Communications
Volume15
Issue number2
DOIs
StatePublished - Feb 2016

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Keywords

  • Coordinated multi-point
  • decentralized algorithms
  • multicell cooperation
  • sparsity

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