Time–Frequency Warped Waveforms
Time–Frequency Warped Waveforms
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时频扭曲波形
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
H. Arslan
中科院分区：
文献类型：
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作者：
Mostafa Ibrahim;A. Demir;H. Arslan
即将到来的通信系统在各个方面都朝着提高灵活性的方向发展。提高灵活性对于满足不同的服务需求至关重要。这封信提出了一种新颖的波形设计方案，该方案利用轴扭曲来实现不同脉冲形状的和平共处。扭曲变换非均匀地操纵晶格样本，并提供处理信号的时频占有率的灵活性。该方法能够以准正交方式利用灵活的脉冲形状，并提高频谱效率。此外，还利用扭曲波形设计保留了有助于有效资源分配的矩形资源块结构。
The forthcoming communication systems are advancing toward improved flexibility in various aspects. Improved flexibility is crucial to cater diverse service requirements. This letter proposes a novel waveform design scheme that exploits axis warping to enable peaceful coexistence of different pulse shapes. A warping transform manipulates the lattice samples non-uniformly and provides flexibility to handle the time–frequency occupancy of a signal. The proposed approach enables the utilization of flexible pulse shapes in a quasi-orthogonal manner and increases the spectral efficiency. In addition, the rectangular resource block structure, which assists an efficient resource allocation, is preserved with the warped waveform design as well.