Multi-User MIMO Channel Emulator with Automatic Channel Sounding Feedback

Tran Thi Thao NGUYEN; Leonardo LANANTE; Yuhei NAGAO; Hiroshi OCHI

doi:10.1587/transfun.E99.A.1918

Multi-User MIMO Channel Emulator with Automatic Channel Sounding Feedback

Tran Thi Thao NGUYEN, Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI

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Wireless channel emulators are used for the performance evaluation of wireless systems when actual wireless environment test is infeasible. The main contribution of this paper is the design of a MU-MIMO channel emulator capable of sending channel feedback automatically to the access point from the generated channel coefficients after the programmable time duration. This function is used for MU beamforming features of IEEE 802.11ac. The second contribution is the low complexity design of MIMO channel emulator with a single path implementation for all MIMO channel taps. A single path design allows all elements of the MIMO channel matrix to use only one Gaussian noise generator, Doppler filter, spatial correlation channel and Rician fading emulator to minimize the hardware complexity. In addition, single path implementation allows the addition of the feedback channel output with only a few additional non-sequential elements which would otherwise double in a parallel implementation. To demonstrate the functionality of our MU-MIMO channel emulator, we present actual hardware emulator results of MU-BF receive signal constellation on oscilloscope.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.11 pp.1918-1927

Publication Date: 2016/11/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1587/transfun.E99.A.1918

Type of Manuscript: Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)

Category: VLSI Design Technology and CAD

Authors

Tran Thi Thao NGUYEN
  Kyushu Institute of Technology
Leonardo LANANTE
  Kyushu Institute of Technology
Yuhei NAGAO
  the Radrix Inc.
Hiroshi OCHI
  Kyushu Institute of Technology

Keyword

MIMO channel emulator, FPGA implementation, channel state information, IEEE 802.11n/ac, frequency selective fading

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Tran Thi Thao NGUYEN, Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI, "Multi-User MIMO Channel Emulator with Automatic Channel Sounding Feedback" in IEICE TRANSACTIONS on Fundamentals, vol. E99-A, no. 11, pp. 1918-1927, November 2016, doi: 10.1587/transfun.E99.A.1918.
Abstract: Wireless channel emulators are used for the performance evaluation of wireless systems when actual wireless environment test is infeasible. The main contribution of this paper is the design of a MU-MIMO channel emulator capable of sending channel feedback automatically to the access point from the generated channel coefficients after the programmable time duration. This function is used for MU beamforming features of IEEE 802.11ac. The second contribution is the low complexity design of MIMO channel emulator with a single path implementation for all MIMO channel taps. A single path design allows all elements of the MIMO channel matrix to use only one Gaussian noise generator, Doppler filter, spatial correlation channel and Rician fading emulator to minimize the hardware complexity. In addition, single path implementation allows the addition of the feedback channel output with only a few additional non-sequential elements which would otherwise double in a parallel implementation. To demonstrate the functionality of our MU-MIMO channel emulator, we present actual hardware emulator results of MU-BF receive signal constellation on oscilloscope.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E99.A.1918/_p

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@ARTICLE{e99-a_11_1918,
author={Tran Thi Thao NGUYEN, Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Multi-User MIMO Channel Emulator with Automatic Channel Sounding Feedback},
year={2016},
volume={E99-A},
number={11},
pages={1918-1927},
abstract={Wireless channel emulators are used for the performance evaluation of wireless systems when actual wireless environment test is infeasible. The main contribution of this paper is the design of a MU-MIMO channel emulator capable of sending channel feedback automatically to the access point from the generated channel coefficients after the programmable time duration. This function is used for MU beamforming features of IEEE 802.11ac. The second contribution is the low complexity design of MIMO channel emulator with a single path implementation for all MIMO channel taps. A single path design allows all elements of the MIMO channel matrix to use only one Gaussian noise generator, Doppler filter, spatial correlation channel and Rician fading emulator to minimize the hardware complexity. In addition, single path implementation allows the addition of the feedback channel output with only a few additional non-sequential elements which would otherwise double in a parallel implementation. To demonstrate the functionality of our MU-MIMO channel emulator, we present actual hardware emulator results of MU-BF receive signal constellation on oscilloscope.},
keywords={},
doi={10.1587/transfun.E99.A.1918},
ISSN={1745-1337},
month={November},}

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TY - JOUR
TI - Multi-User MIMO Channel Emulator with Automatic Channel Sounding Feedback
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1918
EP - 1927
AU - Tran Thi Thao NGUYEN
AU - Leonardo LANANTE
AU - Yuhei NAGAO
AU - Hiroshi OCHI
PY - 2016
DO - 10.1587/transfun.E99.A.1918
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E99-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2016
AB - Wireless channel emulators are used for the performance evaluation of wireless systems when actual wireless environment test is infeasible. The main contribution of this paper is the design of a MU-MIMO channel emulator capable of sending channel feedback automatically to the access point from the generated channel coefficients after the programmable time duration. This function is used for MU beamforming features of IEEE 802.11ac. The second contribution is the low complexity design of MIMO channel emulator with a single path implementation for all MIMO channel taps. A single path design allows all elements of the MIMO channel matrix to use only one Gaussian noise generator, Doppler filter, spatial correlation channel and Rician fading emulator to minimize the hardware complexity. In addition, single path implementation allows the addition of the feedback channel output with only a few additional non-sequential elements which would otherwise double in a parallel implementation. To demonstrate the functionality of our MU-MIMO channel emulator, we present actual hardware emulator results of MU-BF receive signal constellation on oscilloscope.
ER -