Network massive MIMO for cell-boundary users: From a precoding normalization perspective

Changwoo Lee, Chan Byoung Chae, Taehyung Kim, Sooyong Choi, Juho Lee

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

25 Citations (Scopus)

Abstract

In this paper, we propose network massive multiple-input multiple-output (MIMO) systems, where three radio units (RUs) connected via one digital unit (DU) support multiple user equipments (UEs) at a cell-boundary through the same radio resource, i.e., the same frequency/time band. For precoding designs, zero-forcing (ZF) and matched filter (MF) with vector or matrix normalization are considered. We also derive the formulae of the lower and upper bounds of the achievable sum rate for each precoding. Based on our analytical results, we observe that vector normalization is better for ZF while matrix normalization is better for MF. Given antenna configurations, we also derive the optimal switching point as a function of the number of active users in a network. Numerical simulations confirm our analytical results.

Original languageEnglish
Title of host publication2012 IEEE Globecom Workshops, GC Wkshps 2012
Pages233-237
Number of pages5
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 IEEE Globecom Workshops, GC Wkshps 2012 - Anaheim, CA, United States
Duration: 2012 Dec 32012 Dec 7

Publication series

Name2012 IEEE Globecom Workshops, GC Wkshps 2012

Other

Other2012 IEEE Globecom Workshops, GC Wkshps 2012
CountryUnited States
CityAnaheim, CA
Period12/12/312/12/7

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

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    Lee, C., Chae, C. B., Kim, T., Choi, S., & Lee, J. (2012). Network massive MIMO for cell-boundary users: From a precoding normalization perspective. In 2012 IEEE Globecom Workshops, GC Wkshps 2012 (pp. 233-237). [6477575] (2012 IEEE Globecom Workshops, GC Wkshps 2012). https://doi.org/10.1109/GLOCOMW.2012.6477575