Precoding and Selection for Coordinated Multipoint Transmission in Fronthaul-Constrained Cloud-RAN

Mykola Servetnyk*, Carrson C. Fung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A joint transmission point selection and precoding scheme is proposed herein to mitigate interference in a C-RAN system with distributed fronthaul-constrained transmission points. Two methods are proposed to deal with the original NP-hard problem. First, reformulation into convex form is done using an upper bound method, where tightness of the bound and its implication on system scenario are easy to establish. The second one uses successive convex approximation to approximate the nonconvex constraint and is shown to maximize spectral efficiency at the expense of higher computational complexity compared to the first approach. Numerical results will show the efficacy of the proposed approaches.

Original languageEnglish
Article number8836521
Pages (from-to)51-55
Number of pages5
JournalIEEE Wireless Communications Letters
Volume9
Issue number1
DOIs
StatePublished - Jan 2020

Keywords

  • Cooperative transmission
  • precoder design
  • successive convex approximation
  • transmission point clustering

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