RF Amplifier Setting Selection for Power-Efficient 5G Transmission
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Solution Overview
Problem
Current wireless communication technologies face inefficiencies in power usage due to sequential determination of transmission settings, leading to lower power efficiency and shorter battery life in mobile devices, especially with the adoption of higher-order modulations and wider bandwidths in 5G standards.
Innovation Solution
Jointly determining transmission settings such as digital pre-distortion (DPD) settings, envelope tracking (ET) settings, and amplifier settings based on power efficiency, and storing these in a look-up table (LUT) for efficient retrieval and adjustment during operation, allowing for varying settings with changing output powers and modulation schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If transmission settings are determined sequentially, then the device complexity is reduced and ease of operation is improved, but power efficiency deteriorates and power consumption increases
Solution Approach 1:
The patent merges the sequential determination of transmission settings (DPD settings, amplifier settings, ET settings) into a joint determination process. The LUT stores pre-calculated optimal settings that result from jointly optimizing multiple parameters together, allowing the system to achieve superior power efficiency without real-time complex calculations.
Solution Approach 2:
The patent performs preliminary joint optimization of transmission settings during the LUT creation phase. By pre-calculating and storing the optimal combinations of DPD, amplifier, and ET settings for various operating conditions, the system avoids complex real-time optimization while achieving high power efficiency during actual transmission operations.
2Use of energy by moving object
If amplifier settings remain constant while output power changes, then device complexity is reduced, but power efficiency deteriorates
Solution Approach 1:
The patent implements dynamic amplifier settings that adapt to changing output power requirements. The LUT contains pre-calculated amplifier settings optimized for different power levels, allowing the system to dynamically adjust amplifier operation to maintain high efficiency across varying transmission conditions without requiring complex real-time control logic.
3Loss of energy
If jointly determined transmission settings are used, then power efficiency increases and power consumption decreases, but device complexity and computational requirements increase
Solution Approach 1:
The patent performs the computationally intensive joint optimization of transmission settings during the LUT creation phase rather than during real-time operation. By pre-calculating and storing optimal settings for various operating conditions, the system achieves low real-time power consumption without requiring complex computational resources during actual transmission operations.
Data Source
AI summary
An apparatus is disclosed for transmission setting selection. In an example aspect, an apparatus includes a wireless interface device with a communication processor and a radio-frequency front-end. The communication processor is configured to provide a signal. The radio-frequency front-end is coupled to the communication processor and configured to accept the signal. The radio-frequency front-end includes an amplifier configured to amplify the signal based on one or more amplifier settings. The wireless interface device is configured to adjust the one or more amplifier settings responsive to an output power being changed with a gain being unchanged.