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http://dx.doi.org/10.6109/jkiice.2020.24.2.290

Studying Full-duplex Communication System using Software-defined Radio  

Kim, Seong Hwan (Department of Information & Communications Engineering, Gyeongsang National University)
Lee, Wongsup (Department of Information & Communications Engineering, Gyeongsang National University)
Ryu, Jong Yeol (Department of Information & Communications Engineering, Gyeongsang National University)
Ban, Tae-Won (Department of Information & Communications Engineering, Gyeongsang National University)
Abstract
In this paper, we analyze the effect of mobility on the performance of full-duplex radio. For this, we implement a full-duplex radio prototype using a software-defined radio that is powered by a battery and can thus function in mobile environments. In addition, we compare the performance of self-interference cancellation schemes for two cases considering multi-antenna based full duplex radio and circulator based full duplex radio, respectively. Finally, we show a negative effect of mobility on the self-interference cancellation performance of the full-duplex radio system, and analyze the effect of the update period of the self-interference cancellation filter on the performance. In particular, when the update period is reduced by about 1000 times, the power of self-interference is reduced by 5.7dB for circulator-based full-duplex radio and 3.1dB for both antenna-based full-duplex radio.
Keywords
software-defined radio; full-duplex radio; mobility; self-interference cancellation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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