Non-linear modeling of a physical system using look-up table with polynomial interpolation
US-9225501-B2 · Dec 29, 2015 · US
System and method for digital memorized predistortion for wireless communication
US2017033969A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017033969-A1 |
| Application number | US-201615173887-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 6, 2016 |
| Priority date | May 1, 2002 |
| Publication date | Feb 2, 2017 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a power amplifier having an output and coupled to the predistortion lookup table. The power amplifier system further includes a feedback loop providing a signal associated with the output of the power amplifier to the predistortion lookup table and a switch disposed in the feedback loop and operable to disconnect the predistortion lookup table from the output of the power amplifier.
First claim
Opening claim text (preview).
1 . (canceled) 2 . A method comprising: receiving an input signal; providing the input signal to an address data former, wherein the address data former generates a digital lookup table key corresponding to the input signal; providing the digital lookup table key to a predistortion lookup table coupled to the address data former, wherein the predistortion lookup table generates a predistortion signal based on the digital lookup table key; multiplying the input signal and the predistortion signal to produce a multiplied signal; amplifying the multiplied signal at a power amplifier to produce an amplified signal; providing a feedback signal corresponding to the amplified signal; and selectively connecting and disconnecting the feedback signal to the predistortion lookup table.
Assignees
Inventors
Classifications
in integrated circuits · CPC title
using AGC [Automatic Gain Control] circuits or amplifiers · CPC title
using feedback acting on predistortion circuits (H03F1/3264 takes precedence) · CPC title
Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion · CPC title
A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2017033969A1 cover?
- A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a power amplifier having an output and coupled to the predistortion lookup table. The …
- Who is the assignee on this patent?
- Dali Systems Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04L27/368. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Feb 02 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).