Hybrid Beamforming Analog Codebook Selection for Wireless Devices
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Solution Overview
Problem
Hybrid beamforming systems face challenges in adaptively adjusting the beamforming analog circuit to different environments and scenarios, leading to suboptimal signal transmission performance due to limited analog circuit flexibility and the complexity of optimizing beamforming gains.
Innovation Solution
A wireless communication device with hybrid beamforming that includes a controller and storage to select and use suitable analog codebooks based on environmental and scenario information, pre-simulating various scenarios to generate candidate codebooks for adaptive adjustment of the beamforming analog circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If hybrid beamforming systems use analog circuits to reduce cost and power consumption, then establishment cost and power consumption are reduced, but adaptability to different environments and scenarios deteriorates
Solution Approach 1:
Multiple analog codebooks are pre-designed and stored in the storage unit for different scenarios and environments. The controller selects the appropriate codebook in advance based on current conditions, eliminating the need for real-time analog circuit reconfiguration and enabling rapid adaptation while maintaining low power consumption.
Solution Approach 2:
The system changes parameters by selecting different pre-designed analog codebooks with varying beamforming configurations. Each codebook contains different phase shifter settings and beamforming weights optimized for specific scenarios, allowing the analog circuit to adapt to different environments by switching between predefined parameter sets rather than real-time adjustment.
2Ease of manufacture
If hybrid beamforming systems use analog circuits to reduce the number of signal processing circuits, then establishment cost is reduced, but ease of operation deteriorates
Solution Approach 1:
Optimal beamforming configurations are pre-calculated and stored in analog codebooks for various scenarios. The controller automatically selects the appropriate codebook based on environmental information, eliminating the need for manual adjustment of analog phase shifters and making the system easy to operate while maintaining cost-effectiveness.
Solution Approach 2:
The system performs self-adjustment by automatically selecting the appropriate analog codebook based on scenario or environmental information received from the communication environment. This self-service mechanism eliminates the need for manual intervention in adjusting analog circuits, improving ease of operation while maintaining the cost benefits of analog implementation.
3Device complexity
If single analog codebook is used in hybrid beamforming, then device complexity is reduced, but signal transmission performance deteriorates
Solution Approach 1:
Multiple analog codebooks are pre-designed and stored for different scenarios and environments. The controller selects the most appropriate codebook based on current conditions, ensuring optimal signal transmission performance for each scenario without requiring complex real-time optimization algorithms, thus maintaining manageable device complexity.
Solution Approach 2:
The system employs multiple analog codebooks with different beamforming parameters and configurations. By selecting the appropriate codebook based on environmental information, the system adapts parameters to match current transmission conditions, improving signal transmission performance while keeping the overall device complexity manageable through pre-computed solutions.
Data Source
AI summary
A wireless communication device with hybrid beamforming and a control method thereof are provided. The wireless communication device includes a plurality of antennas, a beamforming digital circuit, a plurality of radio frequency (RF) chains, a beamforming analog circuit, a controller and a storage. The RF chains receive signals processed by the beamforming digital circuit to generate antenna signals. The RF chains are connected to a part or all of the antennas through the beamforming analog circuit to transmit the antenna signal to the corresponding antennas. The number of the RF chains is smaller than the number of the antennas. The storage stores a plurality of candidate analog codebooks. The controller selects one of the candidate analog codebooks as a selected analog codebook according to scenario or environmental information, and adjusts the beamforming analog circuit according to the selected analog codebook.