15 citations · 43 across the 13 of their papers we have counts for
6 papers · 1 filter
Precoded Non-Orthogonal Frequency Division Multiplexing with Subcarrier Index Modulation
Prakash Chaki, Takumi Ishihara, Shinya Sugiura
In this paper, we propose a novel precoded non-orthogonal frequency division multiplexing (NOFDM) with subcarrier index modulation (SIM) to increase spectral efficiency for multica…
Power-Domain-Multiplexed Precoded Faster-Than-Nyquist Signaling for NOMA Downlink
Prakash Chaki, Shinya Sugiura
In this paper, we propose a novel precoded faster-than-Nyquist (FTN) signaling scheme with power-domain-multiplexing in non-orthogonal multiple access (NOMA) downlink for tapping t…
Delay-Doppler-Domain Channel Estimation and Reduced-Complexity Detection of Faster-than-Nyquist Signaling Aided OTFS
Zekun Hong, Shinya Sugiura, Chao Xu +1
We conceive a novel channel estimation and data detection scheme for OTFS-modulated faster-than-Nyquist (FTN) transmission over doubly selective fading channels, aiming for enhanci…
Precoded faster-than-Nyquist signaling using optimal power allocation for OTFS
Zekun Hong, Shinya Sugiura, Chao Xu +1
A precoded orthogonal time frequency space (OTFS) modulation scheme relying on faster-than-Nyquist (FTN) transmission over doubly selective fading channels is {proposed}, which enh…
Optical RISs Improve the Secret Key Rate of Free-Space QKD in HAP-to-UAV Scenarios
Phuc V. Trinh, Shinya Sugiura, Chao Xu +1
Large optical reconfigurable intelligent surfaces (ORISs) are proposed for employment on building rooftops to facilitate free-space quantum key distribution (QKD) between highaltit…
50 Years of Permutation, Spatial and Index Modulation: From Classic RF to Visible Light Communications and Data Storage
Naoki Ishikawa, Shinya Sugiura, Lajos Hanzo
In this treatise, we provide an interdisciplinary survey on spatial modulation (SM), where multiple-input multiple-output microwave and visible light, as well as single and multica…