Database

No.ContentsData typeLocationDate of resistrationRegistrant
7Average received SNR, CSI, and channel capacity of 2×2 MIMO propagation channelMeasurement202, Bld. A, Faculty of Engineering, Niigata Univ., JapanOct. 3rd 2022Secretary of propagation DB comittee
(Data provision : K. Nishimori/Niigata Univ.)

Parameters

ParameterValue
Size of evaluation area7.5 m x 6.2 m x 2.6 m
Center Frequency2.452 GHz
Transmission power-5 dBm
Number of subcarriers56
Subcarrier spacing78.75 kHz
Transmission point(x,y) = (6.75,2.75) (m)
(See floor plan of measurement area)
Transmission antenna height1.2 m
Transmission antennaSleeve dipole antenna (2 dBi)
– 2 antennas with 0.5 wavelength interval.
– Arranged along the y direction in floor plan of measurement area.
– omnidirectional in horizontal plane, ‘figure 8’ directivity in vertical plane.
Number of received evaluation poionts(1) Average received SNR : 64
(2) CSI (Channel State Information) : 6
(3) Channel capacity : 64
(See floor plan of measurement area)
Reception antenna height1,2 m
Reception antennaSleeve dipole antenna (2 dBi)
– 2 antennas with 0.5 wavelength interval.
– Arranged along the y direction in floor plan of measurement area.
– omnidirectional in horizontal plane, ‘figure 8’ directivity in vertical plane.
Data(1) Average received SNR (dB) :
– SNR based on average power of 56 subcarriers and 2×2 channels.
– Relative average SNR assuming an average SNR of 15 dB at position #1
in foor plan of measurement area.
(2) CSI (Channel state Information) :
– Complex magnitude for each elemnt of 2×2 MIMO channel for evry 56 subcarriers.
– Relative value when the average power* at positon #1 in floor plan of measurement area sets to1.
* Average power of 56 subcarriers and 2×2 channels.
(3) Channel capacity (bits/s/Hz) :
– 2×2 MIMO channel capacity calculated based on shannon and ZF (Zero Forcing) norm.

Structure of measurement site

Expanded diagram

Floor plan of measurement area

Measurement points

Registered data

(1) Average SNR

(2) CSI (Channel State Information)

(3) Channel capacity

Conditions of data use

Cite the following paper.

[1] Kentaro Nishimori, “On estimation of MIMO channel capacity using measurement data in indoor real propagation environment,” IEICE Technical rep. vol. 121, no. 330, AP2021-140, pp. 31-36, Jan. 2022 (in japanese).

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