Final report on link level and system level channel models - Winner

WINNER D5.4 v. 1.4
Class F [GHz] Distance (m) σ τ [ns] Value
given
LOS
NLOS
Method
5.3 3-100 20-120 CDF 90% WCS [2]
2.25 1-15 34.5-
49.0
5.25 1-15 14.4-
15.7
Ref
mean VNA [1]
mean VNA [1]
5.3 5-200 30-180 CDF90% WCS [2]
2.25 1-15 34.5-49 mean VNA [1]
5.25 1-15 14-15.7 mean VNA [1]
WCS: wideband channel sounder.
5.5.1.3 Angle-spreads
Reference [DRX98] was considering the tap and cluster angle-spreads of indoor WLAN channels by
using frequency domain measurements. The measured data with 400 MHz BW (5.0-5.4 GHz) were
employed. FD (freq. domain)-SAGE was applied.
1. Cluster and cluster AS: a cluster was based on the observation that multipath components
(MPCs) arrive in groups. AS means RMS angle-spread.
2. Average tap AS: To find a tap AS for the channel with a specific delay resolution 1 f c , all the
MPCs were collected for every 1 f c and put them in the same delay bin. For each individual
tap, the instantaneous tap AS was calculated.
Average tap AS and cluster AS
Average tap AS with different bandwidths
It is interesting to notice that the mean tap AS and cluster AS have some difference, but small. The tap
AS changes with RF bandwidth, but the difference is quite small.
In [Xia96] mean azimuth spread on MS side at 5 GHz is 60.67° and standard deviation is 14.26°. In the
measurement setup BS antenna height was 3 m and MS antenna height 1.2 m.
Measurement results from the COST 273 action for indoor office environment are collected in [BBK+02].
The following table contains information about azimuth, elevation and delay spreads as well as about the
number of identified clusters:
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