Codebook Scaling Factor for Variable Frequency Response Handling
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Solution Overview
Problem
Current wireless communication systems face challenges in maintaining uniform frequency response across various frequencies, leading to inconsistent performance and increased power consumption due to variable frequency response characteristics of antenna elements.
Innovation Solution
A method involving the generation of codebooks and scaling factors based on electric field measurements for each frequency in a frequency band, which are used to modify phase weights and optimize the frequency response, ensuring a flat and uniform frequency response across the band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single codebook is used for the entire frequency band, then device complexity is reduced, but frequency response uniformity deteriorates
Solution Approach 1:
The frequency band is divided into multiple sub-bands, with separate codebooks allocated to each sub-band. This segmentation allows the system to maintain a single codebook approach (reducing overall complexity) while achieving frequency-specific optimization (improving uniformity) by selecting the appropriate sub-band codebook for each frequency component of the transmit beam.
Solution Approach 2:
The system dynamically selects which sub-band codebook to apply based on the specific frequency characteristics of the transmit beam being generated. This dynamic selection mechanism enables adaptive frequency response optimization without requiring all codebooks to be simultaneously active, thus balancing complexity and performance.
2Stability of the object's composition
If frequency-specific codebooks are generated for each frequency, then frequency response uniformity is improved, but device complexity increases
Solution Approach 1:
Instead of managing a separate codebook for every individual frequency (which would be prohibitively complex), the frequency band is segmented into a manageable number of sub-bands. Each sub-band has its own codebook, providing sufficient frequency-specific optimization while keeping the total number of codebooks at a practical level for device implementation.
3Ease of manufacture
If variable frequency response characteristics are not compensated, then processing simplicity is maintained, but power consumption increases due to inconsistent performance
Solution Approach 1:
The system applies different codebook characteristics tailored to specific frequency sub-bands, optimizing the local quality of the frequency response for each sub-band. This localized optimization compensates for variable frequency response characteristics, enabling more efficient power utilization across the frequency band while maintaining processing feasibility through the use of pre-computed codebooks.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may identify, based at least in part on a scaling factor, one or more phase weights associated with a transmit beam of the wireless communication device. The scaling factor is associated with a frequency in a frequency band associated with the wireless communication device. The wireless communication device may generate, based at least in part on the one or more phase weights, the transmit beam. The wireless communication device may transmit a wireless communication using the transmit beam. Numerous other aspects are described.