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US 10,433,198 B2Granted
Channel sounding testing device and method to estimate large-scale parameters for channel modelling
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsJohannes Kobele, Andreas Kulessa
Life of this patent
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Abstract
A channel sounding testing device is provided. The channel sounding testing device comprises a processor configured to use channel models and scenario specific propagation parameters, which are verified by comparable channel measurements in representative environments, to perform testing operations.
Claims4
A channel sounding testing device, comprising:
- a processor configured to perform wireless channel testing operations using channel models and propagation parameters for a specific measurement scenario, which are verified by comparable channel measurements;
- and
- wherein measurement parameters that affect estimation of one or more large scale parameters are documented along with the measurement results in order to ensure comparability,
- wherein a one of the large scale parameters is a noise threshold,
- wherein for all measurements, the noise threshold, as well as the parameters used for estimation of the noise threshold, are documented in order to achieve comparability of the derived large scale parameters, and
- wherein the noise threshold is defined according to the following equation:
- NoiseThreshold
- dB
- =
- γ
- +
- 20
-
-
- log
- 10
-
- 1
- Δ
-
-
- L
-
- ∑
- i
- =
- 1
- +
- (
- 1
- -
- Δ
- )
-
- L
- L
-
- |
- α
- i
-
- |
- 2
- where:
- γ is a margin,
- αi is a complex amplitude of the ith sample, amplitude of the sample,
- L is a length of a channel impulse response, and
- Δ is a parameter within the interval
- 1
- L
- ≤
- Δ
- ≤
- 1
- ,
- and where Δ is in steps of
- 1
- L
- .
56 more elements
A testing method comprising:
- performing wireless channel testing operations, by a channel sounding testing device, using channel models and propagation parameters for a specific measurement scenario, which are verified by comparable channel measurements;
- and
- wherein measurement parameters that affect estimation of one or more large scale parameters are documented along with measurement results in order to ensure comparability,
- wherein a one of the large scale parameters is a noise threshold,
- wherein for all measurements, the noise threshold, as well as the parameters used for estimation of the noise threshold, are documented in order to achieve comparability of the derived large scale parameters, and
- wherein the noise threshold is defined according to the following equation:
- NoiseThreshold
- dB
- =
- γ
- +
- 20
-
-
- log
- 10
-
- 1
- Δ
-
-
- L
-
- ∑
- i
- =
- 1
- +
- (
- 1
- -
- Δ
- )
-
- L
- L
-
- |
- α
- i
-
- |
- 2
- where:
- γ is a margin,
- αi is a complex amplitude of the ith sample, amplitude of the sample,
- L is a length of a channel impulse response, and
- Δ is a parameter within the interval
- 1
- L
- ≤
- Δ
- ≤
- 1
- ,
- and where Δ is in steps of
- 1
- L
- .
56 more elements
Dependencies are inferred from the claim text.