221 citations · 402 across the 5 of their papers we have counts for
6 papers
Calibration-Free Positioning Technique Using Wi-Fi Ranging and Built-in Sensors of Mobile Devices
Jeongsik Choi, Yang-Seok Choi
As positioning solutions integrate multiple components to improve accuracy, the number of parameters that require calibration has increased. This paper studies a calibration-free p…
Unsupervised Learning Technique to Obtain the Coordinates of Wi-Fi Access Points
Jeongsik Choi, Yang-Seok Choi, Shilpa Talwar
Given that the accuracy of range-based positioning techniques generally increases with the number of available anchor nodes, it is important to secure more of these nodes. To this…
Full-duplex in 5G Small Cell Access: SystemDesign and Performance Aspects
Jingwen Bai, Shu-ping Yeh, Feng Xue +3
Recent achievement in self-interference cancellation algorithms enables potential application of full-duplex (FD) in 5G radio access systems. The exponential growth of data traffic…
Wideband Self-Adaptive RF Cancellation Circuit for Full-Duplex Radio: Operating Principle and Measurements
Timo Huusari, Yang-Seok Choi, Petteri Liikkanen +3
This paper presents a novel RF circuit architecture for self-interference cancellation in inband full-duplex radio transceivers. The developed canceller is able to provide wideband…
Full-Duplex Mobile Device - Pushing the Limits
Dani Korpi, Joose Tamminen, Matias Turunen +5
In this article, we address the challenges of transmitter-receiver isolation in \emph{mobile full-duplex devices}, building on shared-antenna based transceiver architecture. Firstl…
Simultaneous Transmission and Reception: Algorithm, Design and System Level Performance
Yang-Seok Choi, Hooman Shirani-Mehr
Full Duplex or Simultaneous transmission and reception (STR) in the same frequency at the same time can potentially double the physical layer capacity. However, high power transmit…