Weighted graph coloring based softer pilot reuse for TDD massive MIMO systems

Chih-Wen Chang, Han Wei Chan

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

Abstract

In the massive multiple-input multiple-output (MIMO) systems, the serious pilot contamination problem severely restricts its ability to boost the spectrum utilization. To tackle this problem, the conventional concept of softly reusing the spectrum resources for the inner regions of the neighboring cells has been extended to reuse the pilot resources so as to accommodate more users. Alternatively, properly selecting the users to reuse the pilots among the neighboring cells can alleviate the pilot contamination problem as well. In this paper, we delicately integrate these two concepts to properly reuse the pilots allocated to the outer regions of the cells. By well designing the hazard-and secure-edge regions to manage the pilot reuse, the increment of interference can be effectively suppressed; and, consequently, the more accommodated users can contribute to the remarkably higher sum data rates.

Original languageEnglish
Title of host publication2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538617342
DOIs
Publication statusPublished - 2018 Jun 8
Event2018 IEEE Wireless Communications and Networking Conference, WCNC 2018 - Barcelona, Spain
Duration: 2018 Apr 152018 Apr 18

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume2018-April
ISSN (Print)1525-3511

Other

Other2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
CountrySpain
CityBarcelona
Period18-04-1518-04-18

Fingerprint

Coloring
Contamination
Hazards

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Chang, C-W., & Chan, H. W. (2018). Weighted graph coloring based softer pilot reuse for TDD massive MIMO systems. In 2018 IEEE Wireless Communications and Networking Conference, WCNC 2018 (pp. 1-6). (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2018-April). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC.2018.8377094
Chang, Chih-Wen ; Chan, Han Wei. / Weighted graph coloring based softer pilot reuse for TDD massive MIMO systems. 2018 IEEE Wireless Communications and Networking Conference, WCNC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1-6 (IEEE Wireless Communications and Networking Conference, WCNC).
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abstract = "In the massive multiple-input multiple-output (MIMO) systems, the serious pilot contamination problem severely restricts its ability to boost the spectrum utilization. To tackle this problem, the conventional concept of softly reusing the spectrum resources for the inner regions of the neighboring cells has been extended to reuse the pilot resources so as to accommodate more users. Alternatively, properly selecting the users to reuse the pilots among the neighboring cells can alleviate the pilot contamination problem as well. In this paper, we delicately integrate these two concepts to properly reuse the pilots allocated to the outer regions of the cells. By well designing the hazard-and secure-edge regions to manage the pilot reuse, the increment of interference can be effectively suppressed; and, consequently, the more accommodated users can contribute to the remarkably higher sum data rates.",
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Chang, C-W & Chan, HW 2018, Weighted graph coloring based softer pilot reuse for TDD massive MIMO systems. in 2018 IEEE Wireless Communications and Networking Conference, WCNC 2018. IEEE Wireless Communications and Networking Conference, WCNC, vol. 2018-April, Institute of Electrical and Electronics Engineers Inc., pp. 1-6, 2018 IEEE Wireless Communications and Networking Conference, WCNC 2018, Barcelona, Spain, 18-04-15. https://doi.org/10.1109/WCNC.2018.8377094

Weighted graph coloring based softer pilot reuse for TDD massive MIMO systems. / Chang, Chih-Wen; Chan, Han Wei.

2018 IEEE Wireless Communications and Networking Conference, WCNC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 1-6 (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2018-April).

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

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Chang C-W, Chan HW. Weighted graph coloring based softer pilot reuse for TDD massive MIMO systems. In 2018 IEEE Wireless Communications and Networking Conference, WCNC 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1-6. (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2018.8377094