Hiroki Fukada
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Hiroki Fukada has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Chandan Pradhan
Ericsson Research, Ericsson Japan K.K., Kanagawa, Japan
1 shared publication - Hideki Ochiai
The University of Osaka
1 shared publication - Hiroki Iimori
Ericsson Research, Ericsson Japan K.K., Kanagawa, Japan
1 shared publication - Naoki Ishikawa
Faculty of Engineering, Yokohama National University, Yokohama, Kanagawa, Japan
1 shared publication - Szabolcs Malomsoky
Ericsson Research, Ericsson Japan K.K., Kanagawa, Japan
1 shared publication - Yuto Hama
Department of Electrical and Computer Engineering, Yokohama National University, Yokohama, Japan
1 shared publication
Latest Publications
- Open Access
- 1 January 2026
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Open Journal of the Communications Society
- Vol. 7, 11799-11813
Artificial Noise-Aided Covert Communication for Polar-Coded OFDM Systems Over Frequency-Selective Fading Channels
- 1 January 2026
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Open Journal of the Communications Society
- Vol. 7, 11799-11813
Open AccessArtificial Noise-Aided Covert Communication for Polar-Coded OFDM Systems Over Frequency-Selective Fading Channels
- 10 February 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Wireless Communications Letters
- Vol. 14 (4) , 1239-1243
Covert Communications Without Pre-Sharing of Side Information and Channel Estimation Over Quasi-Static Fading Channels
We propose a new covert communication scheme that operates without pre-sharing side information and channel estimation, utilizing a Gaussian-distributed Grassmann constellation for noncoherent detection. By designing constant-amplitude symbols on the Grassmann manifold and multiplying them by random variables, we generate signals that follow an arbitrary probability distribution, such as Gaussian or skew-normal distributions. The mathematical property of the manifold enables the transmitter’s random variables to remain unshared with the receiver, and the elimination of pilot symbols that could compromise covertness. The proposed scheme achieved higher covertness and achievable rates compared to conventional coherent Gaussian signaling schemes, without any penalty in terms of complexity.
- 10 February 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Wireless Communications Letters
- Vol. 14 (4) , 1239-1243
Covert Communications Without Pre-Sharing of Side Information and Channel Estimation Over Quasi-Static Fading Channels
We propose a new covert communication scheme that operates without pre-sharing side information and channel estimation, utilizing a Gaussian-distributed Grassmann constellation for noncoherent detection. By designing constant-amplitude symbols on the Grassmann manifold and multiplying them by random variables, we generate signals that follow an arbitrary probability distribution, such as Gaussian or skew-normal distributions. The mathematical property of the manifold enables the transmitter’s random variables to remain unshared with the receiver, and the elimination of pilot symbols that could compromise covertness. The proposed scheme achieved higher covertness and achievable rates compared to conventional coherent Gaussian signaling schemes, without any penalty in terms of complexity.