Massive MIMO Antenna System with Distributed Power Supply
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Solution Overview
Problem
Massive MIMO systems face limitations due to channel reciprocity requirements, pilot contamination, and high power consumption, which affect performance and scalability, particularly in distributed architectures where antenna distribution and power supply become complex and costly.
Innovation Solution
A MIMO antenna system with a distributed power supply, where multiple antenna units are connected to a Central Processing Unit (CPU) via cables, with at least one distributed power supply unit along the antenna chain, allowing power to be shared between units and dynamically managed based on traffic and storage status, enabling semi-distributed massive MIMO operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna units are distributed over a large area to improve coverage and reduce path loss, then system performance is improved, but power supply complexity and cost increase
Solution Approach 1:
The power supply system is segmented into multiple independent power supply domains, each serving a specific group of antenna units. This allows each domain to be managed independently, reducing overall system complexity while supporting distributed antenna deployment for improved coverage and performance.
Solution Approach 2:
Different power supply configurations are applied to different regions or domains of the antenna system. Each power supply domain is optimized locally to serve its specific antenna units, allowing flexible power management that adapts to the distributed architecture without requiring a monolithic power supply solution.
2Reliability
If more antenna units are activated to improve user separation and reduce path loss, then system performance is improved, but power consumption increases
Solution Approach 1:
The system dynamically activates or deactivates antenna units based on real-time traffic conditions and power availability. This dynamic control allows the system to optimize user separation and reduce path loss when needed while conserving power during low-traffic periods, resolving the contradiction between performance and energy consumption.
Solution Approach 2:
Each power supply domain autonomously manages its own antenna units based on local power availability and traffic demands. The system self-regulates power consumption by activating only the necessary antenna units in each domain, improving user separation where needed while minimizing overall power consumption.
3Adaptability or versatility
If distributed power supply units are added along the antenna chain to improve scalability, then system extensibility is improved, but device complexity increases
Solution Approach 1:
The distributed power supply architecture segments the overall system into multiple independent power supply domains. Each domain can be independently scaled and configured, allowing the system to expand gradually by adding domains as needed without requiring a complete system redesign, thus improving scalability while managing complexity through modular organization.
Solution Approach 2:
The distributed power supply units are designed with universal functionality to serve multiple antenna units across different domains. This multi-functional design allows the same power supply unit architecture to be reused throughout the system, improving scalability while reducing the complexity that would arise from designing unique power supply solutions for each antenna unit.
Data Source
AI summary
An antenna system (150) with distributed power supply is disclosed. The antenna system (150) comprises a CPU (151) comprising a central power supply (152), multiple antenna units (161, 162, . . . 171, 172 . . . ) connected to the CPU by cables and at least one distributed power supply unit (180) located at someplace along a chain of antenna units. At least one antenna unit (161) receives power from the central power supply (152). In the antenna system (150), at least one antenna unit (171) receives power from another antenna unit (172), at least one antenna unit (173) receives power from the at least one distributed power supply unit (180) such that at least two power supply domains (191, 192) are set up. In each power supply domain, a number of antenna units are connected to the same power supply.