TY - GEN
T1 - Mutualistic Mechanism in Symbiotic Radios
AU - Zhang, Qianqian
AU - Liang, Ying Chang
AU - Yang, Hong Chuan
AU - Poor, H. Vincent
N1 - Funding Information:
VII. ACKNOWLEDGEMENTS This work was supported in part by the National Natural Science Foundation of China under Grant U1801261, Grant 61631005, and Grant 61571100, the Science and Technology Development Fund, Macau SAR, under Grant 0009/2020/A1, the National Key Research and Development Program of China under Grant 2018YFB1801105, the Key Areas of Research and Development Program of Guangdong Province, China, under Grant 2018B010114001, the Fundamental Research Funds for the Central Universities under Grant ZYGX2019Z022, the Programme of Introducing Talents of Discipline to Universities under Grant B20064, and in part by the U.S. National Science Foundation Grant CCF-1908308.
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In symbiotic radio (SR), also called cognitive backscatter communications, a secondary transmitter (STx) transmits messages by modulating its information over the RF signals from a primary transmitter (PTx), and in return, the secondary transmission provides multipath gain instead of interference to the primary transmission when the spreading factor K of SR is large enough. In this paper, we are interested in the fundamental mutualistic mechanism between the primary and secondary transmissions in SR, which describes the condition through which the two systems can benefit each other. We first derive the closed-form expressions for the bit error rates (BERs) for both primary and secondary transmissions for general K, then obtain the condition on K to enable mutualistic symbiosis in SR. It is observed that the critical point of K is related to the average strengths of the direct and backscatter links when the number of receiving antennas is large. Extensive simulation and numerical results are provided to verify the accuracy of theoretical analysis and demonstrate the interrelationship between primary and secondary transmissions.
AB - In symbiotic radio (SR), also called cognitive backscatter communications, a secondary transmitter (STx) transmits messages by modulating its information over the RF signals from a primary transmitter (PTx), and in return, the secondary transmission provides multipath gain instead of interference to the primary transmission when the spreading factor K of SR is large enough. In this paper, we are interested in the fundamental mutualistic mechanism between the primary and secondary transmissions in SR, which describes the condition through which the two systems can benefit each other. We first derive the closed-form expressions for the bit error rates (BERs) for both primary and secondary transmissions for general K, then obtain the condition on K to enable mutualistic symbiosis in SR. It is observed that the critical point of K is related to the average strengths of the direct and backscatter links when the number of receiving antennas is large. Extensive simulation and numerical results are provided to verify the accuracy of theoretical analysis and demonstrate the interrelationship between primary and secondary transmissions.
KW - Symbiotic radio
KW - cognitive backscatter communication
KW - mutualistic conditions
KW - performance analysis
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U2 - 10.1109/GLOBECOM46510.2021.9685738
DO - 10.1109/GLOBECOM46510.2021.9685738
M3 - Conference contribution
AN - SCOPUS:85127249678
T3 - 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings
BT - 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE Global Communications Conference, GLOBECOM 2021
Y2 - 7 December 2021 through 11 December 2021
ER -