Joint precoding and fronthaul optimization for C-RANs in ergodic fading channels

Jinkyu Kang, Osvaldo Simeone, Joonhyuk Kang, Shlomo Shamai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This work investigates the joint design of fronthaul compression and precoding for the downlink of Cloud Radio Access Networks (C-RANs). The main goal is that of bringing insight into an aspect of the optimal functional split between Radio Units (RUs) and Central Unit (CU), namely: where should precoding be performed? Unlike previous works, we tackle this issue for a practical scenario with block-ergodic channels and either instantaneous or stochastic Channel State Information (CSI) at the CU. Optimization algorithms over fronthaul compression and precoding are proposed that are based on a stochastic successive upper-bound minimization approach. Via numerical results, the relative merits of two strategies, in which precoding is carried out at the CU or at the RUs, are evaluated as a function of system parameters such as fronthaul capacity and channel coherence time under either instantaneous or stochastic CSI at the CU.

Original languageEnglish (US)
Title of host publication2015 IEEE International Conference on Communication Workshop, ICCW 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2683-2688
Number of pages6
ISBN (Electronic)9781467363051
DOIs
StatePublished - Sep 8 2015
EventIEEE International Conference on Communication Workshop, ICCW 2015 - London, United Kingdom
Duration: Jun 8 2015Jun 12 2015

Publication series

Name2015 IEEE International Conference on Communication Workshop, ICCW 2015

Other

OtherIEEE International Conference on Communication Workshop, ICCW 2015
CountryUnited Kingdom
CityLondon
Period6/8/156/12/15

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Fingerprint Dive into the research topics of 'Joint precoding and fronthaul optimization for C-RANs in ergodic fading channels'. Together they form a unique fingerprint.

Cite this