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This study seeks to empirically examine the impact of research funding for academic researchers on their research performance in the areas of natural science, engineering, agriculture and fishery science, and medicine and pharmacology in South Korea. Specifically, this study analyzed the research performance of 32,064 academic researchers based on their patent applications, patent registrations, and...
Sparse code multiple access (SCMA) is a nonorthogonal multiple access scheme based on a multi-dimensional codebook with sparse codewords. The sparsity property of SCMA allows the receiver to take advantage of low-complexity message passing algorithm (MPA) detector with maximum likelihood (ML)-like performance. The use of multiple antennas at the SCMA receiver will improve the detection performance...
We consider a full duplex multiuser multiple-input multiple-output system and study the sum rate maximization in a wireless powered communication networks. We assume that the users of uplink (UL) channel have no available power supply and thus a harvest-then-transmit protocol is utilized. Specifically, the base station (BS) first conveys simultaneously the energy to all UL users via energy beamforming...
We propose an optimal power allocation scheme that maximizes the achievable rate of device-to-device (D2D) communications in an OFDM-based cellular system. We first formulate an optimization problem under the condition that a D2D link intends to reuse the uplink resources of the cellular links. We then develop an efficient algorithm for computing the optimal solution to the problem. The performance...
We analyze the impact of interference from device-to-device (D2D) link to cellular link on the performance of the cellular link, in the case when the D2D link shares uplink resource of the cellular link. Using the path loss model, we first derive the interference from D2D link to cellular link as a function of the ratio of the distance between the base station and D2D transmitter and the distance...
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