60 GHz MIMO Antenna Weight Vector Selection
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Solution Overview
Problem
Current 60 GHz wireless communication systems face challenges in optimizing antenna array weight vectors for directional transmission and reception, particularly in multiple-input multiple-output (MIMO) links, which affects data transmission quality and channel capacity.
Innovation Solution
The implementation of beamforming training procedures using IEEE 802.11ad algorithms, such as transmit sector sweeps, receive sector sweeps, and beam refinement phases, to identify optimal antenna array weight vectors for both transmit and receive antenna arrays, enabling efficient MIMO communications by optimizing channel capacity and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming training procedures are implemented to identify optimal antenna array weight vectors, then data transmission quality and channel capacity are improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent performs beamforming training procedures in advance to identify optimal antenna array weight vectors before actual data transmission. The transmitter and receiver conduct sector sweeps and beam refinement phases during initialization, storing the determined weight vectors for subsequent use. This preliminary action ensures high transmission quality without requiring complex real-time processing during data communication.
2Productivity
If multiple antenna arrays are used for MIMO communications, then channel capacity and data transmission efficiency are improved, but interference management and weight vector selection become more complex
Solution Approach 1:
The patent optimizes MIMO communications by determining specific antenna array weight vectors that control signal parameters. The transmitter selects weight vectors from codebooks that optimize spatial distribution of signals across multiple antenna arrays, thereby managing interference through parameter optimization rather than complex coordination mechanisms.
3Reliability
If directional transmission and reception are implemented using antenna arrays, then signal quality is improved, but the need for precise beamforming training and weight vector identification increases system complexity
Solution Approach 1:
The patent segments the beamforming training process into distinct phases: sector sweep for coarse beam alignment and beam refinement phase for precise weight vector determination. This segmentation allows the system to achieve high signal quality through structured, manageable training steps rather than attempting to optimize all parameters simultaneously.
Data Source
AI summary
Various embodiments may be generally directed to antenna array weight vector selection techniques for 60 GHz multiple-input multiple-output (MIMO) communications. In some embodiments, using one or more such techniques, a 60 GHz-capable transmitting device may select respective antenna array weight vectors for two or more transmit antenna arrays, and a 60 GHz-capable receiving device may select respective antenna array weight vectors for two or more receive antenna arrays. In various embodiments, in order to obtain information for use in selecting such antenna array weight vectors, the transmitter and receiver may utilize one or more existing beamforming training algorithms defined for 60 GHz single-input single-output (SISO) communications. In some embodiments, for example, the transmitter and receiver may utilize one or more beamforming training algorithms defined in IEEE 802.11ad-2012. The embodiments are not limited in this context.