Dynamic Waveform Structure Selection for Variable PSD Compliance
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Solution Overview
Problem
Wireless communication systems face challenges in meeting varying power spectral density (PSD) requirements across different frequency bands, leading to inefficiencies in power utilization and interference management.
Innovation Solution
The implementation of interlaced and non-interlaced frequency structures based on PSD parameters, allowing dynamic selection and configuration of waveform structures to meet specific PSD requirements and power utilization factors, including frequency interlacing, time domain repetitions, and reduced subcarrier spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed waveform structure is used across all frequency bands, then device complexity is reduced, but adaptability to different PSD requirements deteriorates
Solution Approach 1:
The patent implements dynamic waveform structure selection where the system adapts between interlaced and non-interlaced frequency structures based on PSD requirements of different frequency bands. This dynamic adaptation allows the communication device to optimize performance for each band without requiring multiple fixed configurations, resolving the contradiction between device complexity and adaptability.
Solution Approach 2:
The system changes the waveform structure parameter (interlaced vs. non-interlaced) based on the PSD requirements of different frequency bands. By modifying this structural parameter dynamically, the system achieves compliance with varying regulatory requirements across bands while maintaining a unified device architecture, thus balancing complexity and adaptability.
2Use of energy by moving object
If interlaced frequency structure is used, then power utilization is improved, but device complexity increases
Solution Approach 1:
The system dynamically selects between interlaced and non-interlaced structures based on operational conditions. The interlaced structure is activated only when PSD constraints require it, allowing the system to achieve improved power utilization when needed without permanently increasing device complexity. This conditional activation resolves the contradiction by making complexity increase temporary and situation-dependent.
3Productivity
If waveform structure is adapted to PSD requirements, then spectrum utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The system implements dynamic waveform structure adaptation that automatically adjusts between interlaced and non-interlaced modes based on real-time PSD requirements. This dynamic approach enables optimal spectrum utilization efficiency in each frequency band while avoiding permanent complexity increases, as the adaptation logic is integrated into the existing waveform processing framework rather than requiring separate fixed configurations.
Data Source
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AI summary
Wireless communications systems and methods related to communicating in a frequency spectrum using interlaced frequency channels and non-interlaced frequency channels are provided. A first wireless communication device selects a waveform structure between an interlaced frequency structure and a non-interlaced frequency structure for communicating in a frequency spectrum. The first wireless communication device communicates, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure. The interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands interlacing with a second set of frequency bands in the frequency spectrum. The non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum.