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• W4210317395 abstract "To reduce the pilot overhead of cascaded channel estimation for RIS-aided Massive MIMO communication system, we proposed a deep compressed sensing-based channel estimation scheme, where U-shaped network (U-Net), an encoder-decoder with skip connection, is used to recover the high-dimensional cascaded channel matrix from limited pilot overhead. The skip connections between encoder and decoder can fuse features of different scales and semantic by concatenating the feature map, which enhance the reconstruction performance of cascaded channel. To further improve the feature extraction ability of U-Net, we design a ResU-Net architecture with stacked residual units to increase the depth of network. Simulation results show the channel estimation of ResU-Net is more accurate than conventional algorithm and other network model. Meanwhile, ResU-Net has good generalization and robustness for different pilot lengths and phase quantization errors." @default.
• W4210317395 created "2022-02-08" @default.
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• W4210317395 date "2022-04-01" @default.
• W4210317395 modified "2023-10-09" @default.
• W4210317395 title "Deep Compressed Sensing-Based Cascaded Channel Estimation for RIS-Aided Communication Systems" @default.
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• W4210317395 doi "https://doi.org/10.1109/lwc.2022.3147590" @default.
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