104 citations · 111 across the 4 of their papers we have counts for
5 papers
Deep Energy Autoencoder for Noncoherent Multicarrier MU-SIMO Systems
Thien Van Luong, Youngwook Ko, Ngo Anh Vien +2
We propose a novel deep energy autoencoder (EA) for noncoherent multicarrier multiuser single-input multipleoutput (MU-SIMO) systems under fading channels. In particular, a single-…
A Tight Upper Bound on Bit Error Rate of Joint OFDM and Multi-Carrier Index Keying
Youngwook Ko
This letter investigates performance enhancement by the concept of multi-carrier index keying in orthogonal frequency division multiplexing (OFDM) systems. For the performance eval…
Defining Spatial Security Outage Probability for Exposure Region Based Beamforming
Yuanrui Zhang, Youngwook Ko, Roger Woods +1
With increasing number of antennae in base stations, there is considerable interest in using beamfomining to improve physical layer security, by creating an `exposure region' that…
Power Allocation Strategies across N Orthogonal Channels at Both Source and Relay
Youngwook Ko, Masoud Ardakani, Sergiy A. Vorobyov
We consider a wireless relay network with one source, one relay and one destination, where communications between nodes are preformed via N orthogonal channels. This, for example,…
How Much Multiuser Diversity is Required for Energy Limited Multiuser Systems?
Youngwook Ko, Sergiy~A. ~Vorobyov, Masoud Ardakani
Multiuser diversity (MUDiv) is one of the central concepts in multiuser (MU) systems. In particular, MUDiv allows for scheduling among users in order to eliminate the negative effe…