Seonghun Yun

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The restoration problem for Poissonian images, arising in medical and astronomical applications, is an active research area. The associated optimization models are quite challenging since the fidelity term of the problem is not a quadratic function and the regularizer is usually nonsmooth. Recently, the augmented Lagrangian-based alternating direction(More)
Channel state information (CSI) is known to play crucial role in multiple-input multiple-output (MIMO) broadcast channels. To acquire CSI at the base station, feedback from users is necessary. Since the optimal feedback-rate to maximize the total system throughput is possibly changed by the channel condition, the conventional equal-sized feedback can be(More)
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