Multi-Block Data Modulation for Inter-Subband Interference
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Solution Overview
Problem
The existing wireless communication technologies face challenges with inter-subband interference and frequency resource waste due to the use of CP-OFDM and varying parameter sets in different subbands, which disrupt orthogonality and require efficient waveform schemes for diverse frequency bands in future communication systems.
Innovation Solution
A data transmission method involving inverse Fourier transform and multiplication operations on frequency domain resource blocks, with oversampling and data repetition to form groups of data sequences, and using equal moduli and phase-changing sequences to improve frequency resource utilization and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If guard intervals are inserted in the frequency domain to solve inter-subband interference, then interference is reduced, but spectral efficiency decreases
Solution Approach 1:
The patent segments the frequency domain resource blocks into multiple groups, where each group undergoes separate inverse Fourier transform operations. This segmentation allows independent processing of different frequency segments, reducing spectral leakage and inter-subband interference without requiring guard intervals, thereby maintaining spectral efficiency.
Solution Approach 2:
The patent introduces an intermediary processing step where frequency domain resource blocks are divided into multiple groups before transformation. This intermediary grouping structure acts as a mediator that prevents direct spectral leakage between adjacent subbands, eliminating the need for guard intervals while preserving frequency resource utilization.
2Reliability
If guard bandwidth is inserted between transmission bandwidths with different parameter sets, then orthogonality disruption is prevented, but frequency resource waste occurs
Solution Approach 1:
The patent segments frequency domain resource blocks into multiple groups and applies separate inverse Fourier transform operations to each group. This segmentation enables different parameter sets to be applied to different groups without requiring guard bandwidth, as each group is independently transformed, thereby maintaining subcarrier orthogonality while avoiding frequency resource waste.
Solution Approach 2:
The patent enables dynamic configuration of parameter sets for different frequency domain resource block groups. Each group can be independently configured with appropriate parameters and transformed separately, allowing the system to adapt to different scenarios without static guard bandwidth requirements, thus improving frequency resource utilization while maintaining orthogonality.
3Adaptability or versatility
If different parameter sets are used between adjacent subbands, then diverse communication scenarios are accommodated, but inter-subband interference is caused
Solution Approach 1:
The patent segments frequency domain resource blocks into multiple groups, allowing each group to be configured with different parameter sets suitable for specific communication scenarios. By performing separate inverse Fourier transform operations on each group, the patent enables diverse waveform schemes while preventing spectral leakage and inter-subband interference through independent processing boundaries.
Solution Approach 2:
The patent applies the principle of local quality by allowing different parameter configurations and processing methods for different frequency domain resource block groups. Each group can be optimized for specific local requirements (e.g., different subcarrier spacings, cyclic prefix lengths), enabling scenario-specific adaptability while maintaining overall system performance through localized optimization without causing inter-group interference.
Data Source
AI summary
Provided are a data transmission method, a data modulation method, an electronic device and a storage medium. The data transmission method includes: transmitting to-be-transmitted data in N frequency domain resource blocks, where each frequency domain resource block includes K(n) subcarriers, where n=1, 2, . . . , N, a value of N is greater than or equal to 1, and a value of K(n) is greater than or equal to 1; performing inverse Fourier transform and multiplication operation processing on to-be-transmitted data on the each frequency domain resource block of the N frequency domain resource blocks to form N groups of data sequences; and transmitting the N groups of data sequences.