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SIMRP: Self-Interference Mitigation Using RIS and Phase Shifter Network

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arxiv 2409.08600 v1 pith:IY5HDH23 submitted 2024-09-13 eess.SP

Zhang Wei , Chen Ding , Bin Zhou , Yi Jiang , Zhiyong Bu This is my paper · ORCID
classification eess.SP
keywords self-interferencestrongmitigationnetworkphaseshiftersimrpadcs
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Strong self-interference due to the co-located transmitter is the bottleneck for implementing an in-band full-duplex (IBFD) system. If not adequately mitigated, the strong interference can saturate the receiver's analog-digital converters (ADCs) and hence void the digital processing. This paper considers utilizing a reconfigurable intelligent surface (RIS), together with a receiving (Rx) phase shifter network (PSN), to mitigate the strong self-interference through jointly optimizing their phases. This method, named self-interference mitigation using RIS and PSN (SIMRP), can suppress self-interference to avoid ADC saturation effectively and therefore improve the sum rate performance of communication systems, as verified by the simulation studies.

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