208 citations · 308 across the 20 of their papers we have counts for
20 papers
On the Multidimensional Augmentation of Fingerprint Data for Indoor Localization in A Large-Scale Building Complex Based on Multi-Output Gaussian Process
Zhe Tang, Sihao Li, Kyeong Soo Kim +1
Wi-Fi fingerprinting becomes a dominant solution for large-scale indoor localization due to its major advantage of not requiring new infrastructure and dedicated devices. The numbe…
Theoretical and Practical Bounds on the Initial Value of Skew-Compensated Clock for Clock Skew Compensation Algorithm Immune to Floating-Point Precision Loss
Seungyeop Kang, Kyeong Soo Kim
A clock skew compensation algorithm was recently proposed based on the extension of Bresenham's line drawing algorithm (Kim and Kang, IEEE Commun. Lett., vol. 26, no. 4, pp. 902--9…
Multi-Output Gaussian Process-Based Data Augmentation for Multi-Building and Multi-Floor Indoor Localization
Zhe Tang, Sihao Li, Kyeong Soo Kim +1
Location fingerprinting based on RSSI becomes a mainstream indoor localization technique due to its advantage of not requiring the installation of new infrastructure and the modifi…
Hierarchical Multi-Building And Multi-Floor Indoor Localization Based On Recurrent Neural Networks
Abdalla Elmokhtar Ahmed Elesawi, Kyeong Soo Kim
There has been an increasing tendency to move from outdoor to indoor lifestyle in modern cities. The emergence of big shopping malls, indoor sports complexes, factories, and wareho…
Optimal Message Bundling with Delay and Synchronization Constraints in Wireless Sensor Networks
Xintao Huan, Kyeong Soo Kim
Message bundling is an effective way to reduce the energy consumption for message transmissions in wireless sensor networks. However, bundling more messages could increase both end…
A Beaconless Asymmetric Energy-Efficient Time Synchronization Scheme for Resource-Constrained Multi-Hop Wireless Sensor Networks
Xintao Huan, Kyeong Soo Kim, Sanghyuk Lee +2
The ever-increasing number of WSN deployments based on a large number of battery-powered, low-cost sensor nodes, which are limited in their computing and power resources, puts the…
On the Practical Implementation of Propagation Delay and Clock Skew Compensated High-Precision Time Synchronization Schemes with Resource-Constrained Sensor Nodes in Multi-Hop Wireless Sensor Networks
Xintao Huan, Kyeong Soo Kim
In wireless sensor networks (WSNs), implementing a high-precision time synchronization scheme on resource-constrained sensor nodes is a major challenge. Our investigation of the pr…
On the Transformation of Latent Space in Autoencoders
Jaehoon Cha, Kyeong Soo Kim, Sanghyuk Lee
Noting the importance of the latent variables in inference and learning, we propose a novel framework for autoencoders based on the homeomorphic transformation of latent variables,…
XJTLUIndoorLoc: A New Fingerprinting Database for Indoor Localization and Trajectory Estimation Based on Wi-Fi RSS and Geomagnetic Field
Zhenghang Zhong, Zhe Tang, Xiangxing Li +10
In this paper, we present a new location fingerprinting database comprised of Wi-Fi received signal strength (RSS) and geomagnetic field intensity measured with multiple devices at…
Hybrid Building/Floor Classification and Location Coordinates Regression Using A Single-Input and Multi-Output Deep Neural Network for Large-Scale Indoor Localization Based on Wi-Fi Fingerprinting
Kyeong Soo Kim
In this paper, we propose hybrid building/floor classification and floor-level two-dimensional location coordinates regression using a single-input and multi-output (SIMO) deep neu…
A Scalable Deep Neural Network Architecture for Multi-Building and Multi-Floor Indoor Localization Based on Wi-Fi Fingerprinting
Kyeong Soo Kim, Sanghyuk Lee, Kaizhu Huang
One of the key technologies for future large-scale location-aware services covering a complex of multi-story buildings --- e.g., a big shopping mall and a university campus --- is…
Large-Scale Location-Aware Services in Access: Hierarchical Building/Floor Classification and Location Estimation using Wi-Fi Fingerprinting Based on Deep Neural Networks
Kyeong Soo Kim, Ruihao Wang, Zhenghang Zhong +4
One of key technologies for future large-scale location-aware services in access is a scalable indoor localization technique. In this paper, we report preliminary results from our…
Multi-Hop Extensions of Energy-Efficient Wireless Sensor Network Time Synchronization
Yangyu Wang, Kyeong Soo Kim
We present the multi-hop extensions of the recently proposed energy-efficient time synchronization scheme for wireless sensor networks, which is based on the asynchronous source cl…
On The Multi-Hop Extension of Energy-Efficient WSN Time Synchronization Based on Time-Translating Gateways
Qimeng Liao, Kyeong Soo Kim
We report preliminary results of a simulation study on the multi-hop extension of the recently-proposed energy-efficient wireless sensor network time synchronization scheme based o…
Simulation Study of an Energy-Efficient Time Synchronization Scheme based on Source Clock Frequency Recovery in Asymmetric Wireless Sensor Networks
Kyeong Soo Kim, Sanghyuk Lee, Eng Gee Lim
In this paper we report preliminary results of a simulation study on an energy-efficient time synchronization scheme based on source clock frequency recovery (SCFR) at sensor nodes…
Energy-Efficient Time Synchronization Based on Asynchronous Source Clock Frequency Recovery and Reverse Two-Way Message Exchanges in Wireless Sensor Networks
Kyeong Soo Kim, Sanghyuk Lee, Eng Gee Lim
We consider energy-efficient time synchronization in a wireless sensor network where a head node (i.e., a gateway between wired and wireless networks and a center of data fusion) i…
Comments on "On Clock Synchronization Algorithms for Wireless Sensor Networks Under Unknown Delay"
Kyeong Soo Kim
The generalization of the maximum-likelihood-like estimator for clock skew by Leng and Wu in the above paper is erroneous because the correlation of the noise components in the mod…
On enery-efficient time synchronization based on source clock frequency recovery in wireless sensor networks
Kyeong Soo Kim, Sanghyuk Lee, Eng Gee Lim
In this paper we study energy-efficient time synchronization schemes with focus on asymmetric wireless sensor networks, where a head node, which is connected to both wired & wirele…
Atomic Scheduling of Appliance Energy Consumption in Residential Smart Grid
Kyeong Soo Kim, Sanghyuk Lee, Tiew On Ting +1
The current formulation of the optimal scheduling of appliance energy consumption uses as optimization variables the vectors of appliances' scheduled energy consumption over equall…
Designing pricing schemes based on progressive tariff and consumer grouping in migration to a future smart grid
Kyeong Soo Kim
We study the design of pricing schemes for a group of consumers with smart meters (e.g., in a Greenfield area) who are connected through a gateway to a traditional electricity gree…