期刊
IEEE COMMUNICATIONS LETTERS
卷 25, 期 3, 页码 907-910出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2020.3035751
关键词
Modulation; Transmitters; Encoding; Channel estimation; Wireless communication; Synchronization; Transmitting antennas; Reconfigurable intelligent surface; differential reflecting modulation (DRM); differential detection
资金
- National Natural Science Foundation of China [61860206005, 61671278]
- Taishan Young Scholar of Shandong Province
This letter proposes a scheme for RIS based communication systems using differential reflecting modulation (DRM), which can work without any channel state information (CSI) and avoid the complex and resource-consuming channel estimation in the transmission process. Simulation results show that the proposed DRM has an acceptable SNR penalty compared to non-differential modulation with coherent detection.
Reconfigurable intelligent surface (RIS) based communications have emerged as a new paradigm. This letter proposes a differential reflecting modulation (DRM) scheme for RIS based communication systems. In DRM, information bits are jointly carried by the activation permutations of the reflecting patterns and the phases of the transmitted signals, leading to that DRM can work without any channel state information (CSI) at the transmitter, RIS or receiver. In other words, DRM can release the intricate and resource-consuming channel estimation in the transmission process. Simulation results show that the proposed DRM pays an acceptable SNR penalty compared to non-differential modulation with coherent detection.
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