Coherence time of wireless channels with large antenna arrays

Mainak Chowdhury; Junyoung Nam; Andrea J. Goldsmith

doi:10.1109/WCNC.2017.7925737

Coherence time of wireless channels with large antenna arrays

Mainak Chowdhury
, Junyoung Nam
, Andrea J. Goldsmith

Stony Brook University

Stanford University
Electronics and Telecommunications Research Institute

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

In this work, energy coherence time, which is defined to be the coherence time of the channel quality information (CQI), is studied as a function of the number of antennas in a receiver with a large antenna array. It is found that, as a function of the number of receiver antennas, the energy coherence time can be much larger than the inverse of the Doppler frequency associated with the propagation environment. Numerical studies with representative values for cellular systems indicate that the net reduction in the frequency of adapting to changes in channel quality can be orders of magnitude higher with practical large antenna arrays.

Original language	English
Title of host publication	2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509041831
DOIs	https://doi.org/10.1109/WCNC.2017.7925737
State	Published - May 10 2017
Event	2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 - San Francisco, United States Duration: Mar 19 2017 → Mar 22 2017

Publication series

Name	IEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)	1525-3511

Conference

Conference	2017 IEEE Wireless Communications and Networking Conference, WCNC 2017
Country/Territory	United States
City	San Francisco
Period	03/19/17 → 03/22/17

Keywords

Channel estimation
Channel model
Coherence time
Massive MIMO

Access to Document

10.1109/WCNC.2017.7925737

Cite this

Chowdhury, M., Nam, J., & Goldsmith, A. J. (2017). Coherence time of wireless channels with large antenna arrays. In 2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 - Proceedings Article 7925737 (IEEE Wireless Communications and Networking Conference, WCNC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WCNC.2017.7925737

@inproceedings{74328a34a16b4d41a1098d4eb37a4daa,

title = "Coherence time of wireless channels with large antenna arrays",

abstract = "In this work, energy coherence time, which is defined to be the coherence time of the channel quality information (CQI), is studied as a function of the number of antennas in a receiver with a large antenna array. It is found that, as a function of the number of receiver antennas, the energy coherence time can be much larger than the inverse of the Doppler frequency associated with the propagation environment. Numerical studies with representative values for cellular systems indicate that the net reduction in the frequency of adapting to changes in channel quality can be orders of magnitude higher with practical large antenna arrays.",

keywords = "Channel estimation, Channel model, Coherence time, Massive MIMO",

author = "Mainak Chowdhury and Junyoung Nam and Goldsmith, \{Andrea J.\}",

note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 ; Conference date: 19-03-2017 Through 22-03-2017",

year = "2017",

month = may,

day = "10",

doi = "10.1109/WCNC.2017.7925737",

language = "English",

series = "IEEE Wireless Communications and Networking Conference, WCNC",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 - Proceedings",

}

Chowdhury, M, Nam, J & Goldsmith, AJ 2017, Coherence time of wireless channels with large antenna arrays. in 2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 - Proceedings., 7925737, IEEE Wireless Communications and Networking Conference, WCNC, Institute of Electrical and Electronics Engineers Inc., 2017 IEEE Wireless Communications and Networking Conference, WCNC 2017, San Francisco, United States, 03/19/17. https://doi.org/10.1109/WCNC.2017.7925737

Coherence time of wireless channels with large antenna arrays. / Chowdhury, Mainak; Nam, Junyoung; Goldsmith, Andrea J.
2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2017. 7925737 (IEEE Wireless Communications and Networking Conference, WCNC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Coherence time of wireless channels with large antenna arrays

AU - Chowdhury, Mainak

AU - Nam, Junyoung

AU - Goldsmith, Andrea J.

PY - 2017/5/10

Y1 - 2017/5/10

N2 - In this work, energy coherence time, which is defined to be the coherence time of the channel quality information (CQI), is studied as a function of the number of antennas in a receiver with a large antenna array. It is found that, as a function of the number of receiver antennas, the energy coherence time can be much larger than the inverse of the Doppler frequency associated with the propagation environment. Numerical studies with representative values for cellular systems indicate that the net reduction in the frequency of adapting to changes in channel quality can be orders of magnitude higher with practical large antenna arrays.

AB - In this work, energy coherence time, which is defined to be the coherence time of the channel quality information (CQI), is studied as a function of the number of antennas in a receiver with a large antenna array. It is found that, as a function of the number of receiver antennas, the energy coherence time can be much larger than the inverse of the Doppler frequency associated with the propagation environment. Numerical studies with representative values for cellular systems indicate that the net reduction in the frequency of adapting to changes in channel quality can be orders of magnitude higher with practical large antenna arrays.

KW - Channel estimation

KW - Channel model

KW - Coherence time

KW - Massive MIMO

UR - https://www.scopus.com/pages/publications/85019723720

U2 - 10.1109/WCNC.2017.7925737

DO - 10.1109/WCNC.2017.7925737

M3 - Conference contribution

AN - SCOPUS:85019723720

T3 - IEEE Wireless Communications and Networking Conference, WCNC

BT - 2017 IEEE Wireless Communications and Networking Conference, WCNC 2017 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2017 IEEE Wireless Communications and Networking Conference, WCNC 2017

Y2 - 19 March 2017 through 22 March 2017

ER -

Coherence time of wireless channels with large antenna arrays

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Keywords

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