Digital pre-distortion for multiple-power amplifier transceivers
US-2024429953-A1 · Dec 26, 2024 · US
High efficiency linearization power amplifier for wireless communication
US2020083914A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020083914-A1 |
| Application number | US-201916388680-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 18, 2019 |
| Priority date | May 1, 2002 |
| Publication date | Mar 12, 2020 |
| Grant date | — |
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- Title
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Abstract
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A predistortion system for linearizing the output of a power amplifier includes a first signal representative of an RF modulated signal and a feedback signal representative of nonlinear characteristics of a power amplifier. The system also includes a predistortion controller, comprising at least one lookup table, adapted to receive the first signal and the feedback signal and to generate a correction factor for correcting the nonlinear characteristics of the power amplifier and combining logic which combines the RF modulated signal with a signal corresponding to the correction factor and supplies it to the power amplifier to linearize the output of the power amplifier.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for routing and switching signals comprising: providing a plurality of remote radio units, each remote radio unit configured to transmit one or more downlink signals and to receive one or more uplink signals; providing at least one digital access unit configured to communicate with the plurality of remote radio units; translating the uplink and downlink signals between RF and base band; packetizing the uplink and downlink base band signals, wherein the packetized signals correspond to a plurality of carriers, each remote radio unit configured to receive or transmit a respective subset of the plurality of carriers; routing and switching the packetized signals among the plurality of remote radio units via the at least one digital access unit; reconfiguring at least one of the plurality of remote radio units by increasing or decreasing the number of carriers in the respective subset of the plurality of carriers; and thereafter routing and switching the packetized signals among the plurality of remote radio units via the at least one digital access unit according to a result of the reconfiguring.
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Classifications
Separate feedback of real and complex signals being present · CPC title
Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion · CPC title
To increase the output power or efficiency · CPC title
the amplifier being a radio frequency amplifier · CPC title
- H04B1/0475Primary
with means for limiting noise, interference or distortion (H04B1/0483 takes precedence) · CPC title
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- What does patent US2020083914A1 cover?
- A predistortion system for linearizing the output of a power amplifier includes a first signal representative of an RF modulated signal and a feedback signal representative of nonlinear characteristics of a power amplifier. The system also includes a predistortion controller, comprising at least one lookup table, adapted to receive the first signal and the feedback signal and to generate a corr…
- Who is the assignee on this patent?
- Dali Wireless Inc
- What technology area does this patent fall under?
- Primary CPC classification H04B1/0475. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Mar 12 2020 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).