Method and device for wireless communication
US-12170588-B2 · Dec 17, 2024 · US
Carrier recovery method and carrier recovery device for pseudo random noise based system
US8995585B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8995585-B2 |
| Application number | US-67039711-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 23, 2007 |
| Priority date | Jul 23, 2007 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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The invention regards to Carrier recovery device, especially estimator device for carrier recovery, for pseudo random noise based systems, comprising a coarse estimator ( 13 ), a fine estimator ( 14 ), a switch ( 15 ) to select estimator output, and a sweeper ( 20 ) to sweep input data carrier frequency offset within a certain range, wherein the coarse estimator ( 13 ) is arranged to estimate a residual frequency offset by using a correlation of pseudo random noise (PN), and the fine estimator ( 14 ) is arranged to estimate the residual frequency offset by using an estimated channel information, and wherein the switch ( 15 ) is controlled to select data outputted out of the coarse estimator ( 13 ), the fine estimator ( 14 ) or the sweeper ( 20 ) as the estimator output.
First claim
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The invention claimed is: 1. A carrier recovery device comprising: a coarse estimator, a fine estimator, a switch to select an estimator output, and a sweeper configured to sweep an input data carrier frequency offset within a certain range, the sweeper comprising a plurality of parallel scanners, each scanner including a pre-rotator and a detector, each pre-rotator configured to use a respective pre-defined frequency value to rotate data inputted into said pre-rotator, each…
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- H04L27/0014Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8995585B2 cover?
- The invention regards to Carrier recovery device, especially estimator device for carrier recovery, for pseudo random noise based systems, comprising a coarse estimator ( 13 ), a fine estimator ( 14 ), a switch ( 15 ) to select estimator output, and a sweeper ( 20 ) to sweep input data carrier frequency offset within a certain range, wherein the coarse estimator ( 13 ) is arranged to estimate a…
- Who is the assignee on this patent?
- Wang Yuanli, Song Bowei, Pan Yu, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04L27/0014. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 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).