Optimal Interactive Energy Efficient Beam-Alignment for Millimeter-Wave Networks

Muddassar Hussain, Nicolo Michelusi

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

2 Scopus citations

Abstract

Millimeter-wave communications rely on narrow-beam transmissions to cope with the strong signal attenuation at these frequencies, thus demanding precise alignment between transmitter and receiver. The beam-alignment procedure may create a significant overhead, thus potentially offsetting the benefits of using narrow communication beams. In this paper, an optimal interactive energy-efficient beam-alignment protocol is designed, that optimizes over the sequence of beams and the duration of beam-alignment, based on feedback received from the user-end (thus, interactive), so as to support a minimum communication rate. It is proved that a fixed-length fractional search method that decouples the beam-alignment of base-station and user-end is optimal. Numerical results using analog beams demonstrate the superior performance of our proposed fractional search: the conventional and interactive exhaustive search methods, and the bisection search method incur, respectively, 7. 5dB, 14dB and 4dB of additional power consumption compared to the proposed fractional search.

Original languageEnglish (US)
Title of host publicationConference Record of the 52nd Asilomar Conference on Signals, Systems and Computers, ACSSC 2018
EditorsMichael B. Matthews
PublisherIEEE Computer Society
Pages577-581
Number of pages5
ISBN (Electronic)9781538692189
DOIs
StatePublished - Feb 19 2019
Externally publishedYes
Event52nd Asilomar Conference on Signals, Systems and Computers, ACSSC 2018 - Pacific Grove, United States
Duration: Oct 28 2018Oct 31 2018

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2018-October
ISSN (Print)1058-6393

Conference

Conference52nd Asilomar Conference on Signals, Systems and Computers, ACSSC 2018
CountryUnited States
CityPacific Grove
Period10/28/1810/31/18

Keywords

  • beam-alignment
  • Markov decision process
  • Millimeter-wave

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

Fingerprint Dive into the research topics of 'Optimal Interactive Energy Efficient Beam-Alignment for Millimeter-Wave Networks'. Together they form a unique fingerprint.

Cite this