Grouped IFFT Waveform Transmission for Edge Leakage Control
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Solution Overview
Problem
The challenge of designing a unified waveform architecture to integrate multiple waveforms flexibly and support diverse channel bandwidths while minimizing interference and reducing costs in future wireless communication systems, particularly in 6G networks, has not been adequately addressed.
Innovation Solution
A data transmission method involving grouping data into N groups, performing IFFT on each group, applying filtering operations to edge groups to reduce out-of-band leakage, and ensuring uniform polyphase filter parameters, thereby allowing waveform fusion without separate deployment of each waveform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple waveform schemes are carried out independently to support different scenarios and channel bandwidths, then adaptability to diverse communication requirements is improved, but device complexity and cost increase
Solution Approach 1:
The patent segments the data into N groups based on frequency domain resource blocks, where edge groups undergo filtering operations and non-edge groups do not. This segmentation allows differential processing that reduces out-of-band leakage while maintaining adaptability to diverse communication scenarios
Solution Approach 2:
The patent creates a unified waveform architecture that can handle multiple waveform schemes (CP-OFDM, DFT-S-OFDM, etc.) through a single processing framework. The filtering operation selectively applied to edge groups provides universal functionality that works across different waveform types and deployment modes, eliminating the need for separate independent implementations
2Loss of energy
If filtering operations are applied to all data groups to reduce out-of-band leakage, then spectral efficiency is improved, but processing complexity and loss of useful signal increase
Solution Approach 1:
The patent applies filtering operations locally only to edge groups in the frequency spectrum, rather than uniformly to all data groups. This local quality approach targets the specific regions where out-of-band leakage occurs most, reducing unnecessary processing on non-edge groups and minimizing loss of useful signal while still achieving spectral efficiency improvements
3Adaptability or versatility
If different numerologies are used for adjacent subbands to meet diverse service requirements, then adaptability to different service types is improved, but interference between subbands increases
Solution Approach 1:
The patent introduces filtering operations as an intermediary mechanism between adjacent subbands with different numerologies. The filter acts as a mediator that reduces harmful interactions and interference between subbands while allowing them to maintain their distinct numerological characteristics, enabling diverse service types to coexist without mutual degradation
Data Source
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AI summary
Provided in the present disclosure are data transmission methods. A method comprises: performing grouping processing on data to be transmitted, so as to obtain N data groups (S110), N being a positive integer greater than 2; separately performing inverse Fourier transform on the data of each data group, so as to obtain N groups of first data sequences (S120); performing filtering operating on the first data sequences in edge groups among the N groups of first data sequences to obtain corresponding second data sequences (S130); performing inverse Fourier transform on the data corresponding to the second data sequences and the data corresponding to the first data sequences in non-edge groups to obtain a time domain data sequence (S140); and transmitting the time domain data sequence (S150). Further provided in the present disclosure are an electronic device and a computer-readable medium.