Processing reference signal across multiple signal carriers
AssigneeNokia Technologies Oy
InventorsOana-Elena BARBU, Benny VEJLGAARD, Johannes HARREBEK, Ryan KEATING
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Abstract
A method, apparatus and computer program is described comprising: obtaining aggregated reference signals received from multiple signal carriers over channels of a mobile communication system, said signal carriers having different carrier frequencies; initialising: a first matrix, a channel power matrix and a noise estimate; and sequentially updating: a channel impulse response estimate, said channel power matrix and said noise estimate using mathematical maximisation; a second matrix; a vector of channel frequency offset; and the first matrix. The sequential updating is repeated until a termination condition reached.
Claims21
1-15. (canceled)
An apparatus comprising:
- at least one processor;
- and
- at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
- obtain aggregated reference signals received from multiple signal carriers over channels of a mobile communication system, wherein the signal carriers having different carrier frequencies;
- initialize a first matrix, a channel power matrix and a noise estimate, wherein the first matrix models how a carrier frequency offset of the channel rotates a reference signal phase;
- sequentially update:
- a channel impulse response estimate, the channel power matrix and the noise estimate;
- a second matrix, wherein the second matrix describes how reference signals transmitted over the channel are spread and delayed due to multipath propagation;
- a vector of channel frequency offset;
- and
- the first matrix;
- and
- repeat the sequential updating until a termination condition is reached.
A method comprising:
- obtaining aggregated reference signals received from multiple signal carriers over channels of a mobile communication system, wherein the signal carriers having different carrier frequencies;
- initializing a first matrix, a channel power matrix and a noise estimate, wherein the first matrix models how a carrier frequency offset of the channel rotates a reference signal phase;
- sequentially updating:
- a channel impulse response estimate, the channel power matrix and the noise estimate;
- a second matrix, wherein the second matrix describes how reference signals transmitted over the channel are spread and delayed due to multipath propagation;
- a vector of channel frequency offset;
- and
- the first matrix;
- and
- repeating the sequential updating until a termination condition is reached.
Dependencies are inferred from the claim text.