Receiver-side estimation of and compensation for signal impairments

US8971465B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8971465-B2
Application numberUS-201313762206-A
CountryUS
Kind codeB2
Filing dateFeb 7, 2013
Priority dateMar 30, 2012
Publication dateMar 3, 2015
Grant dateMar 3, 2015

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Abstract

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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/Q mismatch for the receiver is estimated and compensation for the estimated I/Q mismatch is performed. After compensating for the estimated receiver I/Q mismatch, the carrier frequency offset is re-estimated.

First claim

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What is claimed is: 1. A method, comprising: in a transceiver: receiving a repeating or periodic signal; iteratively estimating a carrier frequency offset for the transceiver based on the signal, estimating an I/Q mismatch for the receiver based on the signal and the estimated carrier frequency offset, and compensating for the estimated I/Q mismatch, while the estimated carrier frequency offset is not less than a threshold and for a number of iterations that does not exceed a s…

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What does patent US8971465B2 cover?
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/Q mismatch for the receiver is estimated and compensation for the estimated I/Q mismatch is performed. After compensating for the estimated receiver I/Q mismatch, the carrier frequency offset is re-estimated.
Who is the assignee on this patent?
Qualcomm Inc
What technology area does this patent fall under?
Primary CPC classification H04L25/022. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).