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US 8,711,769 B2Granted
Interferer region identification using image processing
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsKarl Molnar, Gregory E. Bottomley
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AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsKarl Molnar, Gregory E. Bottomley
Estimating the term…
Demodulation and interference parameter estimation in an OFDM receiver is improved by identifying regions, in a two-dimensional array of time-frequency transmission positions, having related interference parameters, such as resulting from the same pre-coding scheme, transmission rank, transmitting antennas, and the like. An interference measure is estimated for each of a plurality of time-frequency positions. The interference measures are analyzed by considering them as pixels, or picture elements, in a two-dimensional image, and applying image processing algorithms to identify the regions having related interference parameters. The image processing algorithms may include operations such as edge detection, segmentation, and/or clustering. The receiver may perform interference suppression or cancellation such as interference rejection combining of data extracted from signals received within an identified time-frequency region having related interference parameters.
A method of estimating interference present in an Orthogonal Frequency Division Multiplexing wireless communication system, comprising:
User Equipment (UE) operative to receive Orthogonal Frequency Division Multiplexing signals at a plurality of time-frequency positions, comprising:
A base station operative to receive Orthogonal Frequency Division Multiplexing signals at a plurality of time-frequency positions, comprising:
Dependencies are inferred from the claim text.