Symbol Configuration Parameter B for LTE Waveform Adaptation
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Solution Overview
Problem
Current LTE systems using CP-OFDM suffer from significant spectrum leakage, reducing spectral efficiency, and lack a suitable technical scheme for new waveform technologies that are compatible with the LTE system.
Innovation Solution
A method and device for configuring and demodulating symbols in a subframe using a symbol configuration parameter B, which includes K values corresponding to different symbol intervals or numbers, allowing flexible adaptation to various waveform technologies and scenarios, including LTE systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CP-OFDM is used in LTE systems, then good performance is achieved, but spectrum leakage is large and spectral efficiency is reduced
Solution Approach 1:
The patent changes the parameter configuration by introducing a symbol configuration parameter B with K values that correspond to different symbol intervals or symbol numbers. This allows dynamic adjustment of OFDM parameters to optimize spectral efficiency while maintaining performance, directly addressing the contradiction between CP-OFDM performance and spectral efficiency
2Loss of energy
If new waveform technologies are adopted to suppress out-of-band leakage, then spectral efficiency is improved, but compatibility with LTE system is lost
Solution Approach 1:
The patent creates a universal configuration mechanism that can accommodate both traditional CP-OFDM and new waveform technologies. By defining a flexible symbol configuration parameter B that works within the existing LTE framework, the invention enables multiple waveform types to be supported while maintaining LTE system compatibility, thus achieving both improved spectral efficiency and preserved adaptability
3Device complexity
If fixed OFDM symbol intervals are used, then system simplicity is maintained, but adaptability to different waveform technologies is reduced
Solution Approach 1:
The patent introduces dynamic configurability through parameter B, which can take different values to adapt to various waveform technologies and scenarios. This dynamic approach allows the system to adjust symbol intervals and symbol numbers based on requirements, achieving adaptability without significantly increasing system complexity since the configuration is done through parameter setting rather than structural changes
Data Source
AI summary
Disclosed are a method of configuring symbols and a device using the same. Through the use of a symbol configuration parameter B which includes K values corresponding to different symbol intervals or symbol numbers respectively, a symbol interval and a number of symbols in a subframe may be configured according to the symbol configuration parameter B. K is an integer greater than 1.