M.1 Channel Model(s)

37.5443GPPConformance testingRelease 16TSUniversal Terrestrial Radio Access (UTRA) and Evolved UTRA (E-UTRA)User Equipment (UE) Over The Air (OTA) performance

The following channel models are used in evaluation of MIMO OTA methodologies.

The generic models are

– SCME Urban micro-cell, and

In addition, the BS antenna assumptions defined in Annex M.2 also apply when emulating the channel models.

In the following we define the cross polarization power ratio a propagation channel as , where

and

and

– S_VV is the coefficient for scattered/reflected power on V-polarization and incident power on V-polarization;

– S_VH is the coefficient for scattered/reflected power on V-polarization and incident power on H-polarization;

– S_HV is the coefficient for scattered/reflected power on H-polarization and incident power on V-polarization;

– S_HH is the coefficient for scattered/reflected power on H-polarization and incident power on H-polarization.

NOTE: For Vertical only measurements, the powers per delay are used without regard to the specified XPR values.

The following SCME Urban Micro-cell is unchanged from the original SCME paper, with added XPR values, Direction of Travel, and Velocity.

Table M.1-1: SCME urban micro-cell channel model

SCME Urban micro-cell
Cluster #	Delay [ns]			Power [dB]			AoD []	AoA []
1	0	5	10	-3.0	-5.2	-7.0	6.6	0.7
2	285	290	295	-4.3	-6.5	-8.3	14.1	-13.2
3	205	210	215	-5.7	-7.9	-9.7	50.8	146.1
4	660	665	670	-7.3	-9.5	-11.3	38.4	-30.5
5	805	810	815	-9.0	-11.2	-13.0	6.7	-11.4
6	925	930	935	-11.4	-13.6	-15.4	40.3	-1.1
Delay spread [ns]								294
Cluster AS AoD / AS AoA []								5 / 35
Cluster PAS shape								Laplacian
Total AS AoD / AS AoA []								18.2 / 67.8
Mobile speed [km/h] / Direction of travel []								3, 30 / 120
XPR (NOTE: V & H components based on assumed BS antennas)								9 dB
Mid-paths Share Cluster parameter values for:								AoD, AoA, AS, XPR

The parameters of the channel models are the expected parameters for the MIMO OTA channel models.
However, the final channel model achieved for different methods could be a combined effect of the chamber and the channel emulator.

The Rayleigh fading may be implementation specific. However, the fading can be considered to be appropriate as long as the statistics of the generated Rayleigh fading are within standard requirement on Rayleigh fading statistics.