Hyoseok Yi

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We consider the problem of energy-efficient base-station (BS) planning for green cellular network design. There exist a number of criteria for greenness in the literature, but we focus only on the energy-normalized throughput. We first model energy consumption for a heterogeneous network, consisting of macro and micro base-stations, and a network topology.(More)
Abnormal accumulation of β-amyloid (Aβ) is the main characteristic of Alzheimer's disease (AD) brain and Aβ peptides are generated from proteolytic cleavages of amyloid precursor protein (APP) by β-site APP-converting enzyme 1 (BACE1) and presenilin 1 (PS1). Sphingosylphosphorylcholine (SPC), a choline-containing sphingolipid, showed suppressive effect on(More)
Recent global concerns about greenhouse gas necessitate new approach to every element of information and communication technology. Therefore, considering a greenness as another constraint in base-station planning problem is required. There exists a large body of work on network design and base-station planning, but these have not taken greenness into(More)
We solve the problem of environmentally friendly (i.e., energy-efficient) base station and relay-station planning for a simplified cooperative cellular network. We assume a two-hop transmission model based on the time-division multiplexing operation. We propose a twostep iterative algorithm where each iteration consists of an assignment step and a(More)
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