Beamforming Diversity via Orthogonal Encoding for Wireless Path Loss
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Solution Overview
Problem
Wireless communication systems face challenges in securing broadband frequencies at higher frequency bands due to increased propagation path loss, which reduces wave reaching distance and coverage, and existing beam selection techniques struggle to adapt to obstacles and terminal mobility.
Innovation Solution
A beamforming method that selects and uses multiple transmission beams, encoding data with a predetermined orthogonalization code, such as the Alamouti scheme, to achieve transmission beam diversity, allowing for robust communication even with changing channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam selection technique is used to measure and select transmission beams, then beamforming accuracy is improved, but adaptability to obstacles and terminal mobility deteriorates
Solution Approach 1:
The patent segments the transmission beam into multiple sub-beams or beam components that can be independently controlled and selected. This allows the system to maintain beamforming accuracy while adapting to changing conditions by selecting different beam segments or combinations based on real-time channel conditions, obstacles, and terminal mobility.
Solution Approach 2:
The patent implements dynamic beam selection and adjustment mechanisms that can change beam parameters in real-time based on channel conditions. The system dynamically switches between different transmission beams or adjusts beam directions to accommodate obstacles and terminal movement, maintaining both accuracy and adaptability.
2Productivity
If higher frequency bands are used to secure broadband frequencies, then spectral efficiency is improved, but propagation path loss increases
Solution Approach 1:
The patent combines multiple transmission beams to transmit signals simultaneously through different spatial paths. This merging of multiple beam paths creates diversity in the transmission channel, allowing the system to overcome the increased path loss at higher frequencies by utilizing multiple propagation paths with different characteristics, thereby maintaining spectral efficiency while mitigating energy loss.
Data Source
AI summary
A data transmission method for a base station to acquire transmission beam diversity in a wireless communication system is provided. The data transmission method includes selecting at least two transmission beams to be used for data transmission from among multiple transmission beams corresponding to transmission beam information, if receiving the transmission beam information regarding the multiple transmission beams from a terminal, and transmitting data encoded with a predetermined orthogonalization code to the terminal via the selected at least two transmission beams.