تقرير
Multi-mode OAM Convergent Transmission with Co-divergent Angle Tailored by Airy Wavefront
| العنوان: | Multi-mode OAM Convergent Transmission with Co-divergent Angle Tailored by Airy Wavefront |
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| المؤلفون: | Zhao, Yufei, Wang, Ziyang, Lu, Yilong, Guan, Yong Liang |
| المصدر: | IEEE Transactions on Antennas and Propagation (Volume: 71, Issue: 6, June 2023) |
| سنة النشر: | 2023 |
| المجموعة: | Computer Science Mathematics |
| مصطلحات موضوعية: | Computer Science - Information Theory, Electrical Engineering and Systems Science - Signal Processing |
| الوصف: | Wireless backhaul offers a more cost-effective, time-efficient, and reconfigurable solution than wired backhaul to connect the edge-computing cells to the core network. As the amount of transmitted data increases, the low-rank characteristic of Line-of-Sight (LoS) channel severely limits the growth of channel capacity in the point-to-point backhaul transmission scenario. Orbital Angular Momentum (OAM), also known as vortex beam, is considered a potentially effective solution for high-capacity LoS wireless transmission. However, due to the shortcomings of its energy divergence and the specificity of multi-mode divergence angles, OAM beams have been difficult to apply in practical communication systems for a long time. In this work, a novel multi-mode convergent transmission with co-scale reception scheme is proposed. OAM beams of different modes can be transmitted with the same beam divergent angle, while the wavefronts are tailored by the ring-shaped Airy compensation lens during propagation, so that the energy will converge to the same spatial area for receiving. Based on this scheme, not only is the Signal-to-Noise Ratio (SNR) greatly improved, but it is also possible to simultaneously receive and demodulate OAM channels multiplexed with different modes in a limited space area. Through prototype experiments, we demonstrated that 3 kinds of OAM modes are tunable, and different channels can be separated simultaneously with receiving power increasing. The measurement isolations between channels are over 11 dB, which ensures a reliable 16-QAM multiplexing wireless transmission demo system. This work may explore the potential applications of OAM-based multi-mode convergent transmission in LoS wireless communications. Comment: Airy beam, line-of-sight channel, orbital angular momentum, OAM multi-mode, wireless communication |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1109/TAP.2023.3263920 |
| URL الوصول: | http://arxiv.org/abs/2312.00797 |
| رقم الأكسشن: | edsarx.2312.00797 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1109/TAP.2023.3263920 |
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