Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
On the effect of imperfect timing synchronization on pilot contamination
School of Electrical Engineering and ACCESS Linnaeus Center, KTH Royal Institute of Technology, Stockholm, Sweden.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-7599-4367
2017 (English)In: 2017 IEEE International Conference on Communications (ICC) / [ed] Debbah M.,Gesbert D.,Mellouk A., IEEE, 2017Conference paper, Published paper (Refereed)
Abstract [en]

The phenomenon of pilot contamination (PC) in multi-cell Massive MIMO systems is investigated in the presence of imperfect timing synchronization (TS). In particular, a basic setup is considered, where a base station (BS) is perfectly synchronized with the user of its cell, but there is imperfect TS between the BS and the user in another cell, possibly due to different propagation distances. A discrete-time system model is derived based on the continuous-time system model. The discrete-time system model accurately captures the phenomenon of imperfect TS in terms of the timing mismatch and the pulse shaping filter impulse responses. The derived discrete-time system model is used to study the achievable rates of a two-cell Massive MIMO uplink. It is shown that the structure imposed to the pilot contaminating signal due to the imperfect TS can be leveraged to mitigate the effect of PC. The level of PC suppression is quantified as a function of the timing mismatch and the characteristics of the transmit/receive pulse shaping filters.

Place, publisher, year, edition, pages
IEEE, 2017.
Series
Conference Record - International Conference on Communications, ISSN 1550-3607
Keyword [en]
Training, Uplink, Synchronization, Discrete-time systems, Pulse shaping methods, Channel estimation
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-142306DOI: 10.1109/ICC.2017.7996671ISBN: 978-1-4673-8999-0 (electronic)ISBN: 978-1-4673-9000-2 (print)OAI: oai:DiVA.org:liu-142306DiVA: diva2:1152573
Conference
2017 IEEE International Conference on Communications (ICC), 21-25 May 2017, Paris, France
Available from: 2017-10-25 Created: 2017-10-25 Last updated: 2017-10-25

Open Access in DiVA

fulltext(669 kB)19 downloads
File information
File name FULLTEXT01.pdfFile size 669 kBChecksum SHA-512
3ef0c9063432f41a82274e56edb185e89abf61e5e503845ceba4d908e6ff35ad2de55125d165bf264113f4ca28f425c778eac4c9b627b1431e2e822d671d28c8
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Björnson, EmilLarsson, Erik G
By organisation
Communication SystemsFaculty of Science & Engineering
Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 19 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 14 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf