Apparatus and a Method
AssigneeNokia Corporation
InventorsAntti NISKANEN, David BITAULD
Life of this patent
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Abstract
An apparatus including: addition circuitry configured to receive simultaneously a probe signal that has passed through a channel having a complex transmission and a reference signal and configured to produce at least: a plurality of weighted additions including an addition of the probe signal and the reference signal with different relative phase rotations between the probe signal and the reference signal for each weighted addition; and processing circuitry configured to use at least two of the plurality of weighted additions to determine a first quantitative parameter for the channel dependent upon the complex transmission for the channel.
Claims26
An apparatus comprising:
- addition circuitry configured to receive a probe signal that has passed through a channel having a complex transmission and a reference signal and configured to produce at least:
- a plurality of weighted additions comprising an addition of the probe signal and the reference signal with different relative phase rotations applied before addition between the probe signal and the reference signal and
- processing circuitry configured to use at least two of the plurality of weighted additions to determine a first quantitative parameter for the channel dependent upon the complex transmission for the channel.
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6-9. (canceled)
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A method comprising:
- receiving a probe signal that has passed through a channel having a complex transmission;
- receiving a reference signal;
- combining the probe signal and the reference signal, after applying a first phase rotation between the probe signal and the reference signal, to produce a first resultant signal;
- combining the probe signal and the reference signal, after applying a second phase rotation between the probe signal and the reference signal, to produce a second resultant signal;
- and
- using at least the first resultant signal and the second resultant signal to determine a first quantitative parameter for the channel dependent upon the complex transmission for the channel.
An apparatus comprising:
- addition circuitry configured to receive a probe signal that has passed through a channel having a complex transmission and a reference signal and configured to produce at least:
- a plurality of weighted additions comprising an addition of the probe signal and the reference signal, wherein a differential complex weighting is applied before addition to one of the probe signal and the reference signal but not to the other of the probe signal and the reference signal, and wherein each of the plurality of weighted additions uses a different differential complex weighting;
- and processing circuitry configured to use at least two of the plurality of weighted additions to determine a first quantitative parameter for the channel dependent upon the complex transmission for the channel.
Dependencies are inferred from the claim text.