Methods and Devices for Mitigating Interference
First Claim
1. A method, comprising:
- receiving a signal comprising a two-dimensional signal pattern in a time-frequency representation, wherein the two-dimensional signal pattern comprises a first reference signal at a predetermined first position in the two-dimensional signal pattern and at least one second reference signal at a predetermined second position in the two-dimensional signal pattern, wherein the first reference signal comprises cell identification information of a target cell of a cellular radio system and the at least one second reference signal comprises cell identification information of at least one interfering cell of the cellular radio system;
determining a first noise covariance measure based on the first reference signal;
determining at least one second noise covariance measure based on the at least one second reference signal; and
mitigating an interference comprised in the received signal based on the first noise covariance measure and the at least one second noise covariance measure.
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Accused Products
Abstract
A method includes receiving a signal including a two-dimensional signal pattern in a time-frequency representation, wherein the two-dimensional signal pattern includes a first reference signal at a predetermined first position in the two-dimensional signal pattern and at least one second reference signal at a predetermined second position in the two-dimensional signal pattern. The first reference signal includes cell identification information of a target cell of a cellular radio system and the at least one second reference signal includes cell identification information of at least one interfering cell of the cellular radio system. The method further includes determining a first noise covariance measure based on the first reference signal, determining at least one second noise covariance measure based on the at least one second reference signal, and mitigating an interference included in the received signal based on the first noise covariance measure and the at least one second noise covariance measure.
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Citations
20 Claims
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1. A method, comprising:
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receiving a signal comprising a two-dimensional signal pattern in a time-frequency representation, wherein the two-dimensional signal pattern comprises a first reference signal at a predetermined first position in the two-dimensional signal pattern and at least one second reference signal at a predetermined second position in the two-dimensional signal pattern, wherein the first reference signal comprises cell identification information of a target cell of a cellular radio system and the at least one second reference signal comprises cell identification information of at least one interfering cell of the cellular radio system; determining a first noise covariance measure based on the first reference signal; determining at least one second noise covariance measure based on the at least one second reference signal; and mitigating an interference comprised in the received signal based on the first noise covariance measure and the at least one second noise covariance measure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device, comprising:
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a first unit configured to receive a signal comprising a two-dimensional signal pattern in a time-frequency representation, wherein the two-dimensional signal pattern comprises a first reference signal at a predetermined first position in the two-dimensional signal pattern and at least one second reference signal at a predetermined second position in the two-dimensional signal pattern, wherein the first reference signal comprises cell identification information of a target cell of a cellular radio system and the at least one second reference signal comprises cell identification information of at least one interfering cell of the cellular radio system; a second unit configured to determine a first noise covariance measure based on the first reference signal; a third unit configured to determine at least one second noise covariance measure based on the at least one second reference signal; and a fourth unit configured to mitigate an interference comprised in the received signal based on the first noise covariance measure and the at least one second noise covariance measure. - View Dependent Claims (18)
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19. A method, comprising:
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receiving a signal comprising a two-dimensional signal pattern in a time-frequency representation, wherein the two-dimensional signal pattern comprises a first reference signal at a predetermined first position in the two-dimensional signal pattern and at least one second reference signal at a predetermined second position in the two-dimensional signal pattern, wherein the first position represents an antenna port and a frequency shift of a target cell of a cellular radio system and the second position represents an antenna port and a frequency shift of at least one interfering cell of the cellular radio system; determining a first noise covariance measure based on pilot signals of the target cell; determining channel coefficients of a predetermined number of interfering cells with respect to corresponding antenna ports and frequency shifts of the interfering cells; interference-canceling the at least one second reference signal with respect to the corresponding antenna ports and frequency shifts of the interfering cells based on the determined channel coefficients of the interfering cells; determining at least one second noise covariance measure with respect to an antenna port and a frequency shift of the interfering cell based on data resource elements comprised in the received signal where the interference-canceling is performed with respect to the corresponding antenna port and frequency shift of the interfering cell; and mitigating an interference comprised in the received signal based on the first noise covariance measure and the at least one second noise covariance measure. - View Dependent Claims (20)
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Specification