Research Description

Earlier researches have proved that magnetic induction (MI) communication has a 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. A novel idea of using compact filamentary planar spiral coils for MI UG communication is proposed to achieve higher received power at a 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 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 achieves 9.22% higher received power than the filamentary planar spiral circular coil. 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), 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 and the traditional non-planar MI coil system suggests that the received power of the proposed system is improved by around 47- 49dBm thus extending the achievable transmission distance.

Publications:

Journals:

1. Swathi S, Sakthivel Murugan S, “Design of Filamentary planar spiral coils with enhanced channel model for magnetic induction based underground communication”, Transactions on Emerging Telecommunications Technologies", May 2021, Vol: 32, Issue: 5, pp 1-25.

2. Swathi S, Sakthivel Murugan S, “ PCB planar and filamentary planar spiral coils based underground Magnetic induction communication with enhanced channel model”, Wireless Personal Communications", May 2021, Vol: 118, Issue: 2, pp 1-27.

3. Swathi S, Sakthivel Murugan S, “Performance Analysis of MI Transmission over EM for Underground Communication”, International Journal of Emerging Research in Management & Technology, May 2017, Vol. 6, No. 5, pp. 467-471.

Conferences:

1. Swathi Sugumar and Sakthivel Murugan Santhanam, "Influence of Various Soil Types and its Properties on Filamentary Planar Coil based Magnetic Induction Communication System" Twenty Seventh National Conference on Communications (NCC-2021) Virtual conference, 27-30th July, 2021, IIT Kanpur, Uttar Pradesh, India.

2. Swathi S, Sakthivel Murugan S, “An Efficient MI Waveguide Based Underground Wireless Communication for Smart Irrigation”, IEEE India Council International Conference INDICON-2017, 15^th - 17^th Dec 2017, IIT Roorkee, Roorkee.

3. Swathi S, Sakthivel Murugan S, “Performance Analysis of MI Transmission over EM for Underground Communication”, International Conference on Emerging Trends in Science & Engineering ICETSE-2017, 11^th - 12^th May 2017, Coorg Institute of Technology, Karnataka. (Best Paper award)

4. Swathi S, Sakthivel Murugan S“Magnetic Induction based wireless underground sensor network system for agriculture automation”, Young Scientist Conclave, 2nd India International Science Festival, 7^th – 11^th Dec 2016, National Physical Laboratory, New Delhi. (Best Poster award)