18550529. METHOD AND ARRANGEMENTS FOR SUPPORTING INTERMODULATON COMPONENT SUPPRESSION IN A TRANSMITTER SYSTEM WITH DIGITAL PREDISTORTION AND FEEDFORWARD LINEARIZATION simplified abstract (Telefonaktiebolaget LM Ericsson (publ))
Contents
- 1 METHOD AND ARRANGEMENTS FOR SUPPORTING INTERMODULATON COMPONENT SUPPRESSION IN A TRANSMITTER SYSTEM WITH DIGITAL PREDISTORTION AND FEEDFORWARD LINEARIZATION
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 METHOD AND ARRANGEMENTS FOR SUPPORTING INTERMODULATON COMPONENT SUPPRESSION IN A TRANSMITTER SYSTEM WITH DIGITAL PREDISTORTION AND FEEDFORWARD LINEARIZATION - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 How does the system handle dynamic changes in the input signals and adapt the suppression of distortion accordingly?
- 1.11 What impact does the suppression of intermodulation components have on the overall efficiency of the transmitter system?
- 1.12 Original Abstract Submitted
METHOD AND ARRANGEMENTS FOR SUPPORTING INTERMODULATON COMPONENT SUPPRESSION IN A TRANSMITTER SYSTEM WITH DIGITAL PREDISTORTION AND FEEDFORWARD LINEARIZATION
Organization Name
Telefonaktiebolaget LM Ericsson (publ)
Inventor(s)
David Scafe of Sundbyberg (SE)
S M Shahrear Tanzil of Ottawa (CA)
Ashim Biswas of Sollentuna (SE)
METHOD AND ARRANGEMENTS FOR SUPPORTING INTERMODULATON COMPONENT SUPPRESSION IN A TRANSMITTER SYSTEM WITH DIGITAL PREDISTORTION AND FEEDFORWARD LINEARIZATION - A simplified explanation of the abstract
This abstract first appeared for US patent application 18550529 titled 'METHOD AND ARRANGEMENTS FOR SUPPORTING INTERMODULATON COMPONENT SUPPRESSION IN A TRANSMITTER SYSTEM WITH DIGITAL PREDISTORTION AND FEEDFORWARD LINEARIZATION
Simplified Explanation
The patent application focuses on suppressing distortion caused by a power amplifier (PA) in a transmitter system that performs digital predistortion (DPD) and feedforward (FF) linearization on multiple digital input signals related to different frequency bands. The PA is used for power amplification in preparation for transmission by a wireless communication network and has an instantaneous bandwidth (IBW). The system identifies intermodulation (IM) components outside the frequency bands but within the IBW, caused by the PA, and selectively processes them as part of the DPD and FF linearization to suppress the formation of some IM components.
- The system includes a power amplifier (PA) in a transmitter system that performs digital predistortion (DPD) and feedforward (FF) linearization.
- The PA is used for power amplification in preparation for transmission by a wireless communication network and has an instantaneous bandwidth (IBW).
- The system identifies intermodulation (IM) components outside the frequency bands but within the IBW, caused by the PA.
- The identified IM components are selectively processed as part of the DPD and FF linearization to suppress the formation of some IM components.
Potential Applications
This technology can be applied in wireless communication systems, such as cellular networks, to improve the efficiency and quality of signal transmission by suppressing distortion caused by power amplifiers.
Problems Solved
1. Distortion caused by power amplifiers in transmitter systems. 2. Intermodulation components outside frequency bands affecting signal quality.
Benefits
1. Improved signal quality. 2. Enhanced efficiency of power amplifiers. 3. Reduction of interference in wireless communication.
Potential Commercial Applications
Optimizing signal transmission in cellular networks for better performance and reliability.
Possible Prior Art
One possible prior art could be the use of digital predistortion techniques in transmitter systems to compensate for distortion caused by power amplifiers. Another could be the implementation of feedforward linearization to improve signal quality in wireless communication systems.
Unanswered Questions
How does the system handle dynamic changes in the input signals and adapt the suppression of distortion accordingly?
The patent application does not provide details on how the system adjusts the suppression of distortion based on dynamic changes in the input signals.
What impact does the suppression of intermodulation components have on the overall efficiency of the transmitter system?
The patent application does not address the potential impact of suppressing intermodulation components on the efficiency of the transmitter system.
Original Abstract Submitted
Supporting suppression of distortion caused by a power amplifier, “PA”, included in a transmitter system configured to perform digital predistortion, “DPD”, and feedforward, “FF”, linearization on multiple digital input signals relating to different frequency bands, respectively. The PA is used for power amplification in preparation for transmission by a wireless communication network and is operative with an instantaneous bandwidth, “IBW’”. Information is obtained identifying one or more intermodulation, “IM”, components outside the frequency bands but within the IBW, and caused by said PA. The identified IM components are selectively processed as part of said DPD to thereby suppress formation of at least some of the identified IM components, and/or as part of the FF linearization by adding reference signals to the FF linearization, which reference signals correspond to at least some of the identified IM components.
