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US 2013/0259173 A1Published application
Receiver-side estimation of and compensation for signal impairments
AssigneeQUALCOMM Incorporated
InventorsNICOLA VARANESE, CHRISTIAN PIETSCH, JUAN MONTOJO
Life of this patent
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Abstract
A receiver receives a repeating or periodic signal and, based on the signal, estimates a carrier frequency offset for the receiver. Based on the signal and the estimated carrier offset, an I/O mismatch for the receiver is estimated and compensation for the estimated I/O mismatch is performed. After compensating for the estimated receiver I/O mismatch, the carrier frequency offset is re-estimated.
Claims27
A method of operating a receiver, comprising:
- receiving a repeating or periodic signal;
- based on the signal, estimating a carrier frequency offset for the receiver;
- based on the signal and the estimated carrier frequency offset, estimating an I/O mismatch for the receiver;
- compensating for the estimated I/O mismatch;
- and
- after compensating for the estimated I/Q mismatch, re-estimating the carrier frequency offset.
3 more elements
A communication device, comprising:
- a receiver to receive signals including a repeating or periodic signal;
- one or more processors;
- and
- memory storing one or more programs to be executed by the one or more processors, the one or more programs comprising instructions to perform two or more iterations of:
- estimating a carrier frequency offset for the receiver, based on the signal;
- estimating an I/O mismatch for the receiver, based on the signal and the estimated carrier frequency offset;
- and
- compensating for the estimated I/O mismatch for the receiver.
5 more elements
A communication device, comprising:
- a receiver to receive signals including a repeating or periodic signal;
- and
- means for performing two or more iterations of:
- estimating a carrier frequency offset for the receiver, based on the signal;
- estimating an I/O mismatch for the receiver, based on the signal and the estimated carrier frequency offset;
- and
- compensating for the estimated I/O mismatch for the receiver.
4 more elements
Dependencies are inferred from the claim text.