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Coding and Coherent Decoding techniques for Continuous Single Slope Cyclic Shift Chirp Signal

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Název: Coding and Coherent Decoding techniques for Continuous Single Slope Cyclic Shift Chirp Signal
Autoři: Kirasamuthranon, L., Wardkein, P., Koseeyaporn, J.
Informace o vydavateli: Společnost pro radioelektronické inženýrství
Rok vydání: 2023
Sbírka: Brno University of Technology (VUT): Digital Library / Vysoké učení technické v Brně: Digitální knihovně
Témata: chirp signal, chirp symbol, cyclic-shift chirp modulation and demodulation, chirp signal spectrum, chirp spread spectrum
Popis: Chirp signals are currently widely used in broadband and spread spectrum communications due to their advantageous features, such as immunity to fading noise, low power consumption, consistent long-range transmission, and constant bandwidth. As a result, they are applied at the physical layer of the Internet-of-Things (IoT). This study proposes two techniques for encoding and decoding 4-cyclic shift chirp symbols, based on addition and subtraction operations. The proposed techniques have simple structures that can be easily implemented using analog circuits. The proposed encoding techniques reveal the relationship between cyclic-shift chirp symbols and pulse modulating signals (PWM, PPM, and PAM), which has rarely been discussed in prior research. Moreover, the circuits for encoding and decoding of the proposed techniques are implemented by discrete commercial devices at low frequency (25-35kHz) which is suitable for sonar and communication under water. However, this proposed technique is not limited to only low frequency but can also be used in high-frequency bands. Experimental and simulation results also show good agreement to theoretical analysis.
Druh dokumentu: article in journal/newspaper
Popis souboru: text; 273-286; application/pdf
Jazyk: English
Relation: Radioengineering; https://www.radioeng.cz/fulltexts/2023/23_02_0273_0286.pdf; http://hdl.handle.net/11012/214320
DOI: 10.13164/re.2023.0273
Dostupnost: http://hdl.handle.net/11012/214320
https://doi.org/10.13164/re.2023.0273
Rights: Creative Commons Attribution 4.0 International license ; http://creativecommons.org/licenses/by/4.0/ ; openAccess
Přístupové číslo: edsbas.F8CD58A7
Databáze: BASE
Popis
Abstrakt:Chirp signals are currently widely used in broadband and spread spectrum communications due to their advantageous features, such as immunity to fading noise, low power consumption, consistent long-range transmission, and constant bandwidth. As a result, they are applied at the physical layer of the Internet-of-Things (IoT). This study proposes two techniques for encoding and decoding 4-cyclic shift chirp symbols, based on addition and subtraction operations. The proposed techniques have simple structures that can be easily implemented using analog circuits. The proposed encoding techniques reveal the relationship between cyclic-shift chirp symbols and pulse modulating signals (PWM, PPM, and PAM), which has rarely been discussed in prior research. Moreover, the circuits for encoding and decoding of the proposed techniques are implemented by discrete commercial devices at low frequency (25-35kHz) which is suitable for sonar and communication under water. However, this proposed technique is not limited to only low frequency but can also be used in high-frequency bands. Experimental and simulation results also show good agreement to theoretical analysis.
DOI:10.13164/re.2023.0273