A method for throughput enhancement in Wi-Fi backscatter communications using power-level modulation |
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| Affiliation: | 1. Sejong University 98 Gunjadong, Gwangjingu, Seoul 05006, Republic of Korea;2. Silicon Works, 16, Maeheon-ro, Seocho-gu, Seoul, Republic of Korea;3. Korea Aerospace University, Goyang, Republic of Korea;1. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russia;2. Functional Electronics Laboratory, Tomsk State University, Tomsk 634050, Russia;3. Laboratory of Single Crystal Growth, South Ural State University, Chelyabinsk 454080, Russia;4. Radio-Received and Radio-Transmitted Devices Department, Novosibirsk State Technical University, Novosibirsk 630073, Russia;5. Department of Electronic Devices, Novosibirsk State Technical University, Novosibirsk 630073, Russia;6. General Physics Department, Novosibirsk State Technical University, Novosibirsk 630073, Russia;1. Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran;2. Department of Electrical Engineering, Yazd University, Yazd, Iran;1. Dept. of Electronics and Communication Engg, Institute of Engineering and Management (IEM), Gurukul Campus, Sector V, Kolkata, WB 700 091, India;2. Department of Electronics and Tele-Communication Engineering, Jadavpur University, Kolkata 700 032, India |
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| Abstract: | An improved data rate technology from tag to reader in Wi-Fi backscatter systems is proposed. The proposed system applies a power-level modulation to the conventional backscatter communication system. This technology can improve the data rate dramatically. It also adopts the Euclidean distance evaluation during demodulation, which looks for the most similar signal to enhance the BER performance. We analyze the error performance of the proposed decoding method, and the numerical results are presented. The power level is formed ranging from 2-level to 8-level. The performance of the detecting algorithm is compared to the conventional system, which utilizes the received power of selected sub-carriers. |
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| Keywords: | Wi-Fi Wi-Fi backscatter Multi-level Internet of Things Energy harvesting Euclidean distance 00-01 99-00 |
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