Optimal joint base station assignment and downlink beamforming for heterogeneous networks

Maziar Sanjabi, Meisam Razaviyayn, Zhi-Quan Luo

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

23 Scopus citations

Abstract

Consider a MIMO heterogeneous network with multiple transmitters (including macro, pico and femto base stations) and many receivers (mobile users). The users are to be assigned to the base stations which then optimize their linear transmit beamformers accordingly. In this work, we consider the problem of joint base station assignment and linear beamformer design to maximize a system wide utility. We first establish the NP-hardness of the resulting optimization problem for a large family of a-fairness utility functions. Then, we propose an efficient algorithm to approximately solve this problem for the special case of sum rate maximization. The simulation results show that the algorithm improves the sum rate.

Original languageEnglish (US)
Title of host publication2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
Pages2821-2824
Number of pages4
DOIs
StatePublished - Oct 23 2012
Event2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Kyoto, Japan
Duration: Mar 25 2012Mar 30 2012

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Other

Other2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012
CountryJapan
CityKyoto
Period3/25/123/30/12

Keywords

  • Base Station Assignment
  • Complexity Analysis
  • Heterogeneous Network
  • MIMO Beamforming

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