An In-Band Full-Duplex Transceiver for Simultaneous Communication and Environmental Sensing
| Autor: | Seyed Ali Hassani, Andrea P. Guevara, Karthick Parashar, Sofie Pollin, Barend van Liempd, Andre Bourdoux |
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| Rok vydání: | 2018 |
| Předmět: |
020301 aerospace & aeronautics
Computer science business.industry Doppler radar Duplex (telecommunications) 020206 networking & telecommunications 02 engineering and technology law.invention 0203 mechanical engineering Duplexer Single antenna interference cancellation law 0202 electrical engineering electronic engineering information engineering Baseband Electronic engineering Wireless Isolation (database systems) Transceiver business |
| Zdroj: | 2018 52nd Asilomar Conference on Signals, Systems, and Computers ACSSC |
| DOI: | 10.1109/acssc.2018.8645165 |
| Popis: | To obtain Tx-Rx isolation in an in-band full-duplex (IBFD) transceiver, the electrical-balance duplexer (EBD) can be utilized to suppress the self-interference (SI). Although the EBD can provide more than 50 dB cancellation of the SI directly at RF, it cannot fully overcome strong signals reflecting off of nearby objects. As a result, the environmental reflections could still limit the performance of IBFD communication and have to be attenuated in an extra cancellation step, e.g., in digital baseband using a digital SI canceler. While mitigating the reflections is a challenging dimension of this technology, it opens a new opportunity to perform environmental sensing. In this paper, an IBFD transceiver architecture is introduced to enable such context-aware communication functionality. We investigate how the EBD’s SI rejection property influences the performance of the proposed communication device which also functions as a Doppler radar. The simulation result demonstrates that the proposed architecture can produce high-resolution Doppler when the EBD provides > 20 dB Tx-Rx isolation. Concerning the constraints dictated by the application, this paper finally suggests a radar-communication trade-off. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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