Envelope Tracking Tuning with Sequential Setting Search
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Solution Overview
Problem
The envelope tracking (ET) tuning process in wireless communication devices is time-consuming, often requiring significant performance compromises to achieve feasible tuning times, which hampers the optimization of the entire ET system.
Innovation Solution
A method and processing module that determine a setting combination from multiple settings available to the ET system by iteratively configuring and measuring performance indices, specifically using a search module to select optimal settings for ET algorithm, tracker, and power amplifier hardware settings, thereby reducing the number of necessary measurements and tuning time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional exhaustive tuning methods are used to optimize ET system performance, then the performance of the ET system is improved, but the tuning time becomes excessively long
Solution Approach 1:
The patent segments the tuning process into two distinct phases: a fast initial tuning phase that achieves acceptable performance quickly, followed by a slower fine-tuning phase that optimizes performance further. This segmentation allows the system to deliver usable performance within feasible time constraints while still achieving optimal performance given sufficient time.
Solution Approach 2:
The patent introduces dynamic tuning modes that can adapt the tuning depth and granularity based on available time resources. The system can perform rapid tuning when time is constrained or more comprehensive tuning when time is abundant, making the tuning process flexible and adaptable to different operational scenarios.
2Measurement precision
If exhaustive tuning is performed to achieve optimal ET system performance, then measurement precision is improved, but the time required for tuning becomes unfeasible
Solution Approach 1:
The patent implements partial tuning by performing measurements on a subset of available settings rather than exhaustively testing all possible combinations. The initial tuning phase performs partial measurements to achieve acceptable performance, while optional fine-tuning phases can perform additional measurements if time permits, balancing measurement precision with time constraints.
3Manufacturing precision
If comprehensive ET tuning is performed to determine optimal settings, then the quality of setting combination is improved, but the complexity of the tuning process increases
Solution Approach 1:
The patent divides the complex tuning process into manageable segments: initial configuration with default settings, fast tuning phase with limited measurements, and optional fine-tuning phase. This segmentation reduces the apparent complexity by breaking down the overwhelming task of exhaustive tuning into smaller, more tractable steps.
Solution Approach 2:
The patent performs preliminary tuning actions that establish a baseline configuration before more detailed optimization. The initial fast tuning phase prepares the system with acceptable settings, creating a foundation that reduces the complexity of subsequent fine-tuning operations by starting from a already-optimized baseline rather than from scratch.
Data Source
AI summary
A method for tuning an envelope tracking (ET) system includes: determining a setting combination from a plurality of setting available to the ET system, wherein determining the setting combination from the plurality of setting available to the ET system includes: determining, by a processing module, a first setting in a plurality of first settings included in the plurality of settings, and configuring the ET system by the first setting; and after the ET system is configured by the first setting, determining, by the processing module, a second setting in a plurality of second settings included in the plurality of settings, and configuring the ET system by the second setting. In addition, the setting combination includes the first setting and the second setting.