Dynamic Bitwidth Modulation for Wireless Transmitter Power Reduction
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Solution Overview
Problem
The existing digital processing units in wireless transmission devices face high power consumption due to fixed bitwidth modulation and coding, which is inefficient for wireless terminals with lower signal quality requirements, leading to increased power usage and overdesign.
Innovation Solution
A method and apparatus that calculate and select the optimal bitwidth, modulation order, and coding rate based on feedback parameters such as supported bitwidth, received signal-to-noise ratio, channel quality, and service demand to minimize power consumption, allowing for dynamic adjustment of these parameters to reduce energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed bitwidth modulation and coding is used in digital processing units, then device complexity is reduced and ease of operation is improved, but power consumption increases and energy efficiency deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of bitwidth, modulation order, and coding rate based on real-time channel quality feedback. The baseband unit continuously adapts these parameters according to receiver conditions, transitioning from fixed static configuration to dynamic reconfigurable processing, thereby optimizing power consumption while maintaining operational simplicity through automated control
Solution Approach 2:
The patent changes key processing parameters (bitwidth, modulation order, coding rate) based on channel conditions and service requirements. By dynamically adjusting these parameters rather than using fixed values, the system reduces unnecessary computational complexity and power consumption while maintaining ease of operation through standardized adaptation mechanisms
2Reliability
If high bitwidth and high modulation order are used to ensure signal quality, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent dynamically adjusts bitwidth, modulation order, and coding rate parameters based on actual channel quality and service requirements. When channel conditions are good or service requirements are low, the system reduces these parameters to lower power consumption while maintaining adequate signal quality. When conditions deteriorate or higher reliability is needed, parameters are increased accordingly, achieving adaptive optimization between reliability and energy efficiency
Solution Approach 2:
The system transitions from static high-bitwidth/high-modulation-order configuration to dynamic parameter adjustment based on real-time feedback. The baseband unit continuously monitors channel conditions and adapts processing parameters, ensuring reliability is maintained only at the level necessary for current conditions, thereby avoiding unnecessary power consumption associated with consistently high-parameter processing
3Device complexity
If fixed bitwidth processing is implemented in baseband units, then device complexity is reduced, but adaptability to different service requirements deteriorates
Solution Approach 1:
The patent implements dynamic reconfiguration of the baseband unit's processing parameters (bitwidth, modulation order, coding rate) based on service requirements and channel conditions. This allows a single baseband unit to adapt to diverse services ranging from low-power IoT communications to high-reliability critical services, maintaining low device complexity through standardized adaptation mechanisms rather than requiring multiple specialized processing units
Solution Approach 2:
The patent enables the baseband unit to perform multiple functions by dynamically adjusting its processing parameters. A single baseband unit can handle various service types (e.g., voice, data, video, IoT) and channel conditions by changing its operational characteristics, achieving multi-functionality and broad adaptability without increasing device complexity through additional specialized hardware
Data Source
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AI summary
A method, an apparatus, and a system for coding and modulating data are disclosed. The method includes: obtaining, from a receiver and a transmitter, parameters for calculating power consumption of the transmitter; calculating, according to the parameters, the power consumption of the transmitter under various combinations of modulation orders and coding rates supported by the transmitter; and selecting a bitwidth, modulation order, and coding rate corresponding to minimum power consumption of the transmitter to code and modulate data sent to the receiver. The method, apparatus, and system provided in embodiments of the present invention save power consumption of the transmitter, and greatly improve energy utilization of a wireless device having a digital processing unit.