System and method for providing first arrival path (FAP) and delay spread estimation (DSE) in wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsBofeng Yuan, Hongbing Cheng, Kee-Bong Song
Life of this patent
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Abstract
A method for minimizing a time domain mean square error (MSE) of channel estimation (CE) includes estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels; estimating, by the processor, a noise variance of the RS channels; and determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance for minimizing the MSE of CE.
Claims20
A method for minimizing a time domain mean square error (MSE) of channel estimation (CE), the method comprising:
- estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels;
- estimating, by the processor, a noise variance of the RS channels;
- determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance;
- and
- determining, by the processor, a minimum value of the time domain MSE based on the estimated PDP, the estimated noise variance, and a length of an uniform PDP.
A method for minimizing a time domain mean square error (MSE) of channel estimation (CE), the method comprising:
- estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels;
- estimating, by the processor, a noise variance of the RS channels;
- and
- determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance for minimizing the MSE of CE, wherein the time domain MSE is:
- MSE
- =
- 1
- +
- L
-
- σ
- 2
- (
- 1
- +
- L
-
- σ
- 2
- )
- 2
- +
- [
- 1
- (
- 1
- +
- L
-
- σ
- 2
- )
- 2
- -
- 2
- 1
- +
- L
-
- σ
- 2
- ]
-
- ∑
- i
- =
- F
- L
- +
- F
- -
- 1
-
-
- P
- i
- (
- 1
- )
- wherein F and L are integers, where:
- 1
- ≤
- L
- ≤
- 3
-
- N
- 4
- ,
- -
- N
- 4
- ≤
- F
- ≤
- N
- 4
- .
- wherein, σ2 is the noise variance, Pi is power of an i-th channel tap or an uniform PDP, F is an index of the FAP, N is a length of the estimated PDP, and L is a length of the uniform PDP.
A system for minimizing a time domain mean square error (MSE) of channel estimation (CE), the system comprising:
- a memory and a processor in communication with the memory, wherein the processor is configured to:
- estimate a power delay profile (PDP) from time domain observation of reference signal (RS) channels;
- estimate a noise variance of the RS channels;
- determine a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance;
- and
- determine a minimum value of the time domain MSE based on the estimated PDP, the estimated noise variance, and a length of an uniform PDP.
Dependencies are inferred from the claim text.