Telefonaktiebolaget LM Ericsson has been granted a patent for a radio transmitter that includes multiple power amplifiers and pre-distortion modules. The system is designed to analyze and compensate for nonlinearities in the amplifiers, enhancing signal quality for different antenna ports through adaptive pre-distortion techniques. GlobalData’s report on Telefonaktiebolaget LM Ericsson gives a 360-degree view of the company including its patenting strategy. Buy the report here.
Smarter leaders trust GlobalData
According to GlobalData’s company profile on Telefonaktiebolaget LM Ericsson, IoT-5G convergence was a key innovation area identified from patents. Telefonaktiebolaget LM Ericsson's grant share as of July 2024 was 53%. Grant share is based on the ratio of number of grants to total number of patents.
Radio transmitter with nonlinearity compensation and pre-distortion
The patent US12074736B2 describes a radio transmitter that incorporates advanced techniques for managing the nonlinearity of power amplifiers (PAs) to enhance signal quality. The transmitter features a first power amplifier linked to a first antenna port, along with an observation receiver that processes the output from this amplifier to generate feedback. A determination module assesses the nonlinearity of the first PA based on input signals and parameters, while a pre-distortion module applies corrections to the baseband signal. Additionally, the system includes one or more second PAs, each with its own determination and pre-distortion modules that utilize the first PA's characteristics to optimize performance for the second antenna ports.
The claims further detail the methods for determining the second function of the second PAs, which is derived from the first function and the differences in their respective parameters. The pre-distortion for the second PA can be initialized using the first PA's pre-distortion, and it is optimized to minimize errors in signal processing. The parameters that characterize the PAs include factors such as temperature, aging, gain, and input power levels, as well as condition variants like bias and transistor parameter variance. The patent also outlines the use of various mathematical processes, such as least squares and recursive least squares, to refine the pre-distortion calculations, ensuring improved performance in radio communication systems.
To know more about GlobalData’s detailed insights on Telefonaktiebolaget LM Ericsson, buy the report here.
Data Insights
From
The gold standard of business intelligence.
Blending expert knowledge with cutting-edge technology, GlobalData’s unrivalled proprietary data will enable you to decode what’s happening in your market. You can make better informed decisions and gain a future-proof advantage over your competitors.
GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
