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Design of filamentary planar spiral coils with enhanced channel model for magnetic induction based underground communication
Transactions on Emerging Telecommunications Technologies ( IF 2.5 ) Pub Date : 2021-05-14 , DOI: 10.1002/ett.4282 Swathi Sugumar 1 , Sakthivel Murugan Santhanam 1
Transactions on Emerging Telecommunications Technologies ( IF 2.5 ) Pub Date : 2021-05-14 , DOI: 10.1002/ett.4282 Swathi Sugumar 1 , Sakthivel Murugan Santhanam 1
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Earlier researches have proved that the magnetic induction (MI) communication has better performance compared to the electromagnetic (EM) wave propagation in underground (UG) medium as it provides low signal attenuation using small MI coils. In general, non-planar coils are employed as transceivers in the MI UG communication and their performance is dependent on coil parameters. The disadvantages of non-planar coils are their bulkiness and limited transmission distance. In this article, a novel idea of using compact filamentary planar spiral coils for MI UG communication is proposed to achieve higher received power at greater transmission distance. An enhanced MI channel model is also proposed to study the medium's influence on MI performance accurately by considering different soil characteristics. Performances of the circular and square coils in the MI system are evaluated based on mutual inductance, path loss, received power, and signal-to-noise ratio. The performance comparison suggests that the filamentary planar spiral square coil MI system achieves 9.22% higher received power than the filamentary planar spiral circular coil MI system. Moreover, the lateral and angular misalignment study shows that square coils are more tolerant to misalignments. For the proposed filamentary planar square spiral coil (FPSSC) MI system, the influence of coil parameters, channel parameters, and coil misalignment on the received power was carried out and its least sensitive and most sensitive parameters were identified for further optimization. The performance comparison between the proposed FPSSC MI system and the traditional non-planar MI coil system suggests that the received power of the proposed system is improved by 47-49 dBm thus extending the achievable transmission distance.
中文翻译：
基于磁感应地下通信的具有增强信道模型的丝状平面螺旋线圈设计
较早的研究已经证明，与地下 (UG) 介质中的电磁 (EM) 波传播相比，磁感应 (MI) 通信具有更好的性能，因为它使用小型 MI 线圈提供低信号衰减。通常，非平面线圈用作 MI UG 通信中的收发器，其性能取决于线圈参数。非平面线圈的缺点是体积大且传输距离有限。在本文中，提出了一种将紧凑的丝状平面螺旋线圈用于 MI UG 通信的新想法，以在更远的传输距离下实现更高的接收功率。还提出了一种增强的 MI 通道模型，通过考虑不同的土壤特性来准确研究介质对 MI 性能的影响。MI系统中圆形和方形线圈的性能根据互感、路径损耗、接收功率和信噪比进行评估。性能比较表明，丝状平面螺旋方形线圈 MI 系统的接收功率比丝状平面螺旋圆形线圈 MI 系统高 9.22%。此外，横向和角度错位研究表明方形线圈更能容忍错位。对于所提出的丝状平面方形螺旋线圈 (FPSSC) MI 系统，进行了线圈参数、通道参数和线圈未对准对接收功率的影响，并确定了其最不敏感和最敏感的参数以进行进一步优化。
更新日期：2021-05-14
中文翻译：
基于磁感应地下通信的具有增强信道模型的丝状平面螺旋线圈设计
较早的研究已经证明，与地下 (UG) 介质中的电磁 (EM) 波传播相比，磁感应 (MI) 通信具有更好的性能，因为它使用小型 MI 线圈提供低信号衰减。通常，非平面线圈用作 MI UG 通信中的收发器，其性能取决于线圈参数。非平面线圈的缺点是体积大且传输距离有限。在本文中，提出了一种将紧凑的丝状平面螺旋线圈用于 MI UG 通信的新想法，以在更远的传输距离下实现更高的接收功率。还提出了一种增强的 MI 通道模型，通过考虑不同的土壤特性来准确研究介质对 MI 性能的影响。MI系统中圆形和方形线圈的性能根据互感、路径损耗、接收功率和信噪比进行评估。性能比较表明，丝状平面螺旋方形线圈 MI 系统的接收功率比丝状平面螺旋圆形线圈 MI 系统高 9.22%。此外，横向和角度错位研究表明方形线圈更能容忍错位。对于所提出的丝状平面方形螺旋线圈 (FPSSC) MI 系统，进行了线圈参数、通道参数和线圈未对准对接收功率的影响，并确定了其最不敏感和最敏感的参数以进行进一步优化。
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