Graph Signal Reconstruction from Low-Resolution Multi-Bit Observations
Zhaoting Liu,
Chen Yu,
Yafeng Wang
et al.
Abstract:Low hardware cost and power consumption in information transmission, processing and storage is an urgent demand for many big data problems, in which the high-dimensional data often be modelled as graph signals. This paper considers the problem of recovering a smooth graph signal by using its low-resolution multi-bit quantized observations. The underlying problem is formulated as a regularized maximum-likelihood optimization and is solved via an expectation maximization scheme. With this scheme, the multi-bit g… Show more
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