Method and corresponding arrangement for dc offset compensation using channel estimation
AssigneeTelefonaktiedboaget LM Ericsson
InventorShousheng He
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Abstract
A method of determining a DC offset in a communications signal received via a communications channel, the communications signal comprising a sequence of training symbols. The method comprises providing a channel estimate of the communications channel based on said sequence of training symbols; determining, based on the channel estimate, an estimate of a noise contribution introduced by the communications channel; and determining an estimate of the DC offset from the determined estimate of the noise contribution.
Claims14
A method of determining a DC offset in a communications signal received via a communications channel, the communications signal comprising a sequence of training symbols;
- the method comprising.
- providing a channel estimate of the communications channel based on said sequence of training symbols;
- determining, based on the channel estimate, an estimate of a noise contribution introduced by the communications channel;
- and
- determining an estimate of the DC offset from the determined estimate of the noise contribution.
A method of compensating a DC offset in a communications signal received via a communications channel, the communications signal comprising a sequence of training symbols, the method comprising:
- determining a DC offset in the communications signal according to the method of any one of claims 1 through 11;
- and
- manipulating the communications signal to compensate for the determined DC offset.
An arrangement for determining a DC offset in a communications signal received via a communications channel, the communications signal comprising a sequence of training symbols;
- the arrangement comprising.
- processing means adapted to provide a channel estimate of the communications channel based on said sequence of training symbols;
- processing means adapted to determine, based on the channel estimate, an estimate of a noise contribution introduced by the communications channel;
- and
- processing means adapted to determine an estimate of the DC offset from the determined estimate of the noise contribution.
Dependencies are inferred from the claim text.