Non-linear modeling of a physical system using look-up table with polynomial interpolation
US-9225501-B2 · Dec 29, 2015 · US
Method and apparatus for controlling update of digital pre-distortion coefficient
US9036736B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9036736-B2 |
| Application number | US-201313971465-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 20, 2013 |
| Priority date | Aug 20, 2012 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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Abstract
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A method and apparatus for controlling update of digital pre-distortion (DPD) coefficient is provided. The apparatus is applicable to a digital power control system, wherein the apparatus comprises: an update controlling unit configured to determine a group of fully-trained DPD coefficients among a plurality of DPD coefficients; and a DPD coefficient generating unit configured to update adaptively the group of fully-trained DPD coefficients according to the result of judgment of the update controlling unit. The DPD coefficients are allowed to be updated after being judged as being able to be fully trained according to power distribution information of DPD input signals, or according to address distribution information of an LUT, or according to average power of output of an HPA; otherwise, they may not be updated, thereby efficiently preventing DPD abnormality resulted from unfull training of coefficients in being updated.
First claim
Opening claim text (preview).
The invention claimed is: 1. An apparatus for controlling an update of at least one digital pre-distortion (DPD) coefficient, applicable to a digital power control system, the apparatus comprising: an update controlling unit configured to perform a judgment to determine a group of fully-trained DPD coefficients among a plurality of DPD coefficients; and a DPD coefficient generating unit configured to adaptively update the group of fully-trained DPD coefficients according to a re…
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Electricity · mapped topic
Electricity · mapped topic
- H04L27/367Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9036736B2 cover?
- A method and apparatus for controlling update of digital pre-distortion (DPD) coefficient is provided. The apparatus is applicable to a digital power control system, wherein the apparatus comprises: an update controlling unit configured to determine a group of fully-trained DPD coefficients among a plurality of DPD coefficients; and a DPD coefficient generating unit configured to update adaptiv…
- Who is the assignee on this patent?
- Fujitsu Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04L27/367. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 19 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).