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Title:
OFDM SIGNAL AND NOISE ESTIMATION
Document Type and Number:
WIPO Patent Application WO/2019/138207
Kind Code:
A1
Abstract:
A signal estimator (1) for an OFDM radio receiver is configured to generate a signal power estimate for a reference signal received on a subcarrier from a plurality of OFDM subcarriers. The signal estimator (1) generates a first channel estimate as a first function of a first set of one or more unfiltered reference-signal channel estimates, where the first set includes an unfiltered reference-signal channel estimate. It generates a second channel estimate as a second function of a second set of one or more unfiltered reference-signal channel estimates, where the second set has no unfiltered reference-signal channel estimate in common with the first set. The signal estimator (1) then generates the signal power estimate by multiplying the first channel estimate with the second channel estimate, such that the generated signal power estimate does not increase with the absolute square of any of the unfiltered reference- signal channel estimates in the first and second sets.

Inventors:
NISSILÄ MAURI (NO)
Application Number:
GB2018/053098
Publication Date:
July 18, 2019
Filing Date:
October 25, 2018
Export Citation:
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Assignee:
NORDIC SEMICONDUCTOR ASA (NO)
WILSON TIMOTHY JAMES (GB)
International Classes:
H04L25/02; H04B17/309; H04B17/318; H04B17/345; H04L1/20; H04L27/26
Foreign References:
EP2538589A12012-12-26
EP2608472A12013-06-26
US20100285766A12010-11-11
US20160135066A12016-05-12
US20140192937A12014-07-10
Other References:
Y-P ERIC WANG ET AL: "A Primer on 3GPP Narrowband Internet of Things (NB-IoT)", INTERNET CITATION, 13 June 2016 (2016-06-13), XP002772811, Retrieved from the Internet
Attorney, Agent or Firm:
DEHNS (GB)
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