A Novel Low-Overhead Channel Sounding Protocol for Downlink Multi-User MIMO in IEEE 802.11ax WLAN

Toshihisa NABETANI; Narendar MADHAVAN; Hiroki MORI; Tsuguhide AOKI

doi:10.1587/transcom.2017EBP3106

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A Novel Low-Overhead Channel Sounding Protocol for Downlink Multi-User MIMO in IEEE 802.11ax WLAN

Toshihisa NABETANI, Narendar MADHAVAN, Hiroki MORI, Tsuguhide AOKI

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Summary :

The next generation wireless LAN standard IEEE 802.11ax aims to provide improved throughput performance in dense environments. We have proposed an efficient channel sounding mechanism for DL-MU-MIMO that has been adopted as a new sounding protocol in the 802.11ax standard. In this paper, we evaluate the overhead reduction in the 802.11ax sounding protocol compared with the 802.11ac sounding protocol. Sounding is frequently performed to obtain accurate channel information from the associated stations in order to improve overall system throughput. However, there is a trade-off between accurate channel information and the overhead incurred due to frequent sounding. Therefore, the sounding interval is an important factor that determines system throughput in DL-MU-MIMO transmission. We also evaluate the effect of sounding interval on the system throughput performance using both sounding protocols and provide a comparative analysis of the performance improvement.

Publication: IEICE TRANSACTIONS on Communications Vol.E101-B No.3 pp.924-932

Publication Date: 2018/03/01

Publicized: 2017/09/15

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2017EBP3106

Type of Manuscript: PAPER

Category: Terrestrial Wireless Communication/Broadcasting Technologies

Authors

Toshihisa NABETANI
  TOSHIBA Corporation
Narendar MADHAVAN
  TOSHIBA Corporation
Hiroki MORI
  TOSHIBA Corporation
Tsuguhide AOKI
  TOSHIBA Corporation

Keyword

channel sounding protocol, DL-MU-MIMO, IEEE 802.11ax, wireless LANs

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Toshihisa NABETANI, Narendar MADHAVAN, Hiroki MORI, Tsuguhide AOKI, "A Novel Low-Overhead Channel Sounding Protocol for Downlink Multi-User MIMO in IEEE 802.11ax WLAN" in IEICE TRANSACTIONS on Communications, vol. E101-B, no. 3, pp. 924-932, March 2018, doi: 10.1587/transcom.2017EBP3106.
Abstract: The next generation wireless LAN standard IEEE 802.11ax aims to provide improved throughput performance in dense environments. We have proposed an efficient channel sounding mechanism for DL-MU-MIMO that has been adopted as a new sounding protocol in the 802.11ax standard. In this paper, we evaluate the overhead reduction in the 802.11ax sounding protocol compared with the 802.11ac sounding protocol. Sounding is frequently performed to obtain accurate channel information from the associated stations in order to improve overall system throughput. However, there is a trade-off between accurate channel information and the overhead incurred due to frequent sounding. Therefore, the sounding interval is an important factor that determines system throughput in DL-MU-MIMO transmission. We also evaluate the effect of sounding interval on the system throughput performance using both sounding protocols and provide a comparative analysis of the performance improvement.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.2017EBP3106/_p

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@ARTICLE{e101-b_3_924,
author={Toshihisa NABETANI, Narendar MADHAVAN, Hiroki MORI, Tsuguhide AOKI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Novel Low-Overhead Channel Sounding Protocol for Downlink Multi-User MIMO in IEEE 802.11ax WLAN},
year={2018},
volume={E101-B},
number={3},
pages={924-932},
abstract={The next generation wireless LAN standard IEEE 802.11ax aims to provide improved throughput performance in dense environments. We have proposed an efficient channel sounding mechanism for DL-MU-MIMO that has been adopted as a new sounding protocol in the 802.11ax standard. In this paper, we evaluate the overhead reduction in the 802.11ax sounding protocol compared with the 802.11ac sounding protocol. Sounding is frequently performed to obtain accurate channel information from the associated stations in order to improve overall system throughput. However, there is a trade-off between accurate channel information and the overhead incurred due to frequent sounding. Therefore, the sounding interval is an important factor that determines system throughput in DL-MU-MIMO transmission. We also evaluate the effect of sounding interval on the system throughput performance using both sounding protocols and provide a comparative analysis of the performance improvement.},
keywords={},
doi={10.1587/transcom.2017EBP3106},
ISSN={1745-1345},
month={March},}

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TY - JOUR
TI - A Novel Low-Overhead Channel Sounding Protocol for Downlink Multi-User MIMO in IEEE 802.11ax WLAN
T2 - IEICE TRANSACTIONS on Communications
SP - 924
EP - 932
AU - Toshihisa NABETANI
AU - Narendar MADHAVAN
AU - Hiroki MORI
AU - Tsuguhide AOKI
PY - 2018
DO - 10.1587/transcom.2017EBP3106
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2018
AB - The next generation wireless LAN standard IEEE 802.11ax aims to provide improved throughput performance in dense environments. We have proposed an efficient channel sounding mechanism for DL-MU-MIMO that has been adopted as a new sounding protocol in the 802.11ax standard. In this paper, we evaluate the overhead reduction in the 802.11ax sounding protocol compared with the 802.11ac sounding protocol. Sounding is frequently performed to obtain accurate channel information from the associated stations in order to improve overall system throughput. However, there is a trade-off between accurate channel information and the overhead incurred due to frequent sounding. Therefore, the sounding interval is an important factor that determines system throughput in DL-MU-MIMO transmission. We also evaluate the effect of sounding interval on the system throughput performance using both sounding protocols and provide a comparative analysis of the performance improvement.
ER -