Phase Compensation for Carrier Aggregation Beamforming
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Solution Overview
Problem
User equipment (UE) with two signal generation modules for carrier aggregation (CA) faces challenges in implementing beamforming Tx diversity (BFTD) due to phase differences between transmission signals, which affect the radiated power and lead to insufficient transmission performance.
Innovation Solution
An electronic device with a processor and transceiver that identifies feedback transmission signals, calculates correlations, predicts radiation power, and adjusts phases to compensate for phase differences between transmission signals from two antennas, ensuring they have minimal phase disparity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two signal generation modules are used for carrier aggregation, then frequency diversity is improved, but phase synchronization between transmission signals deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the processor calculates correlation between feedback signals from two antennas and predicts radiation power. Based on this prediction, the transceiver adjusts the phase of transmission signals to maximize radiation power, creating a closed-loop control system that continuously optimizes phase synchronization
Solution Approach 2:
The patent dynamically changes the phase parameter of transmission signals based on calculated correlation values and predicted radiation power. The transceiver adjusts phase values to optimize the combination of signals from two antennas, transforming a static phase relationship into a dynamically optimized parameter
2Power
If phase adjustment is performed to compensate for path differences, then radiation power is improved, but system complexity increases
Solution Approach 1:
The system performs self-adjustment by automatically calculating correlation between feedback signals, predicting radiation power, and adjusting phases without external intervention. The electronic device serves itself to optimize transmission performance, reducing the need for complex external control mechanisms
Solution Approach 2:
The patent performs preliminary correlation calculation and radiation power prediction before final phase adjustment. This preliminary analysis allows the system to determine optimal phase values in advance, streamlining the adjustment process and reducing real-time computational complexity
Data Source
AI summary
An electronic device is provided. The electronic device includes a first antenna configured to transmit a first transmission signal having a first phase, a second antenna configured to transmit a second transmission signal having a second phase, a transceiver electrically connected to the first antenna and the second antenna, and a processor. The transceiver is configured to identify a first feedback transmission signal including part of the first transmission signal and a second feedback transmission signal including part of the second transmission signal and calculate a correlation for the first and second feedback transmission signals. The processor is configured to predict radiation power radiated from the electronic device based on at least the part of the correlation, control the transceiver to adjust at least one of the first phase or the second phase, and change the predicted radiation power to a predetermined value based on an operation for the adjustment.