SWIPT NOMA (Wireless Data and Power Technology)

2023: A system for simultaneous wireless data and power transmission has been developed. It is the future of the industrial Internet of Things

On September 5, 2023, researchers from Korea Maritime University announced the development of a new system for the simultaneous transmission of data and energy wirelessly. It is assumed that the solution will be in demand in the field of industrial Internet of Things (IIoT).

The IIoT segment uses a non-orthogonal multiple access (NOMA) method with the possibility of simultaneous wireless information and energy transmission (SWIPT). However, the problem is a significant reduction in energy efficiency as distance increases. Specialists from South Korea, who carried out work under the guidance of Associate Professor Dong-Wook Seo, found a way to bypass the existing restrictions. They developed an energy efficient structure by applying SWIPT-NOMA to a distributed antenna system (DAS).

Researchers report on the development of a new system for the simultaneous transmission of data and energy wirelessly

Scientists have proposed a three-step iterative algorithm to maximize the platform's energy efficiency. First, the researchers optimized the energy distribution for the central IoT controller. Next, energy distribution for NOMA and SWIPT was improved. The team also analyzed a failure scenario in which the system cannot provide sufficient energy and the required data transfer rate: this allowed to expand the optimization method to a multi-cluster configuration.

Modeling has shown that the proposed solution allows approximately five times increase in energy efficiency compared to the traditional approach. At the same time, a 10 percent improvement in performance is achieved.

This technology provides efficient power consumption and offers various advantages, such as ease of use and extended battery life of IoT devices. The method can be used with smartphones, laptops and wearable gadgets, says Seo.[1]

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