Apparatus and method for channel estimation in a mobile communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsSung-Soo Kim, Jeong-Soon Park, Huiqiang Zhou
Life of this patent
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Abstract
An apparatus and a method for estimating a Channel Impulse Response (CIR) with respect to a location where a power of a channel exists are provided to enhance a channel estimator in a mobile communication system. The apparatus includes a CIR searcher for selecting a CIR group that is a region where a channel power exists, a CIR estimation part for estimating a CIR of the selected CIR group, and a Discrete Fourier Transform (DFT) for performing a DFT on the estimated CIR.
Claims12
An apparatus for estimating a channel in a mobile communication system, the apparatus comprising:
- a Channel Impulse Response (CIR) group searcher for selecting a CIR group that is a region where a channel power exists;
- a CIR estimation part for estimating a CIR of a selected CIR group;
- and
- a Discrete Fourier Transform (DFT) for performing a DFT on an estimated CIR,
- wherein the CIR group searcher measures a power of a time-domain CIR converted through an Inverse Discrete Fourier Transform (IDFT), determines an average of the power of the measured CIR, arranges CIR groups based on the average of the CIR, and selects the region where the channel power exists.
A method for estimating a channel in a mobile communication system including a Channel Impulse Response (CIR) group searcher, a CIR estimation part, and a Discrete Fourier Transform (DFT), the method comprising:
- selecting, by the CIR group searcher, a CIR group that is a region where a channel power exists;
- estimating, by the CIR estimation part, a CIR of a selected CIR group;
- and
- performing, by the DFT, a DFT on an estimated CIR,
- wherein selecting the region where the channel power exists comprises:
- measuring a power of a time-domain CIR converted through an Inverse Discrete Fourier Transform (IDFT);
- determining an average of the power of the measured CIR;
- and
- arranging CIR groups based on the average of the power of the measured CIR.
Dependencies are inferred from the claim text.