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Codebook Design and Beam Training for Extremely Large-Scale RIS: Far-Field or Near-Field?
Xiuhong Wei
Linglong Dai
Yajun Zhao
Guanghui Yu
Xiangyang Duan
Published in:
CoRR (2021)
Keyphrases
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codebook design
vector quantization
competitive learning
training set
image data
computer vision
supervised learning
training samples
vector quantizer