kth.sePublications
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
Structured Massive Access for Scalable Cell-Free Massive MIMO Systems
Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing 100044, Peoples R China.;Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China..
Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing 100044, Peoples R China.;Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China..ORCID iD: 0000-0003-2434-4329
Linköping Univ, Dept Elect Engn ISY, S-58183 Linköping, Sweden..ORCID iD: 0000-0002-5954-434x
Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing 100044, Peoples R China.;Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China..
Show others and affiliations
2021 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008, Vol. 39, no 4, p. 1086-1100Article in journal (Refereed) Published
Abstract [en]

How to meet the demand for increasing number of users, higher data rates, and stringent quality-of-service (QoS) in the beyond fifth-generation (B5G) networks? Cell-free massive multiple-input multiple-output (MIMO) is considered as a promising solution, in which many wireless access points cooperate to jointly serve the users by exploiting coherent signal processing. However, there are still many unsolved practical issues in cell-free massive MIMO systems, whereof scalable massive access implementation is one of the most vital. In this paper, we propose a new framework for structured massive access in cell-free massive MIMO systems, which comprises one initial access algorithm, a partial large-scale fading decoding (P-LSFD) strategy, two pilot assignment schemes, and one fractional power control policy. New closed-form spectral efficiency (SE) expressions with maximum ratio (MR) combining are derived. The simulation results show that our proposed framework provides high SE when using local partial minimum mean-square error (LP-MMSE) and MR combining. Specifically, the proposed initial access algorithm and pilot assignment schemes outperform their corresponding benchmarks, P-LSFD achieves scalability with a negligible performance loss compared to the conventional optimal large-scale fading decoding (LSFD), and scalable fractional power control provides a controllable trade-off between user fairness and the average SE.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2021. Vol. 39, no 4, p. 1086-1100
Keywords [en]
MIMO communication, Fading channels, Signal processing algorithms, Power control, Interference, Quality of service, Beyond 5G network, cell-free massive MIMO, massive access, AP selection, pilot assignment, user-centric network
National Category
Signal Processing Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-296041DOI: 10.1109/JSAC.2020.3018836ISI: 000631201600014Scopus ID: 2-s2.0-85090228219OAI: oai:DiVA.org:kth-296041DiVA, id: diva2:1663850
Note

QC 20220615

Available from: 2022-06-02 Created: 2022-06-02 Last updated: 2022-06-25Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Björnson, Emil

Search in DiVA

By author/editor
Zhang, JiayiBjörnson, Emil
In the same journal
IEEE Journal on Selected Areas in Communications
Signal ProcessingTelecommunications

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 18 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