Microcomponent Massive MIMO Arrays Polar Power Amplifiers
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Solution Overview
Problem
Massive MIMO systems face inefficiencies in power amplifiers, particularly at lower power levels, where traditional power amplifiers become less efficient and digital pre-distortion (DPD) is not cost-effective for each channel, making it challenging to achieve high power efficiency for beamforming and high-bandwidth data transmission.
Innovation Solution
The integration of polar power amplifiers (PAs) with precise control over phase and amplitude, eliminating the need for DPD, forms a phased array that enables efficient beamforming and high-frequency transmissions, suitable for 5G technologies, even at lower power outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional power amplifiers are used in massive MIMO systems, then high power output can be achieved, but power efficiency deteriorates at lower power levels
Solution Approach 1:
The invention divides the power amplification function into multiple independent power amplifier modules, each capable of operating efficiently at lower power levels. By segmenting the overall power output across multiple amplifiers rather than using a single traditional amplifier, the system maintains high power efficiency even when total power output is reduced, directly resolving the contradiction between power output and power efficiency.
2Use of energy by moving object
If digital pre-distortion (DPD) is implemented for each channel to improve power efficiency, then power efficiency can be enhanced, but device complexity and cost increase
Solution Approach 1:
The invention extracts and removes the complex DPD circuitry from each individual power amplifier channel. Instead of implementing DPD for every channel, the system uses a simplified architecture where DPD is either eliminated or implemented in a centralized manner, thereby maintaining power efficiency through the segmented amplifier design without incurring the high complexity and cost of per-channel DPD.
Solution Approach 2:
The invention replaces expensive and complex DPD implementations with simpler, more cost-effective power amplifier modules that achieve comparable or sufficient performance without requiring sophisticated distortion correction circuitry. This substitution reduces device complexity and cost while maintaining acceptable power efficiency.
3Productivity
If large antenna arrays are used for massive MIMO to serve many terminals, then system capacity increases, but physical size and device complexity increase
Solution Approach 1:
The invention segments the large antenna array into multiple smaller sub-arrays, each with its own simplified power amplification and signal processing chain. This segmentation allows the system to maintain high system capacity by serving multiple terminals across the distributed array while reducing the complexity of any single array element, making the overall system more manageable and cost-effective.
Data Source
AI summary
A microcomponent massive MIMO array is presented. The microcomponent massive array includes a general purpose processor and an integrated power amplifier and transmitter device including a software defined radio (SDR) and a plurality of polar power amplifiers (PAs) disposed on a single integrated circuit, wherein the integrated power amplifier and transmitter device is in communication with the general purpose processor. The microcomponent massive MIMO array further includes an antenna array in communication with the integrated power amplifier and transmitter device.