9 papers
Precision-Aware Hierarchical Spectrum Search for Finite-Precision MUSIC DOA Estimation
Linyun Yue, Chuang Yang, Jierui Chen +1
Dense-grid spectrum search is computationally costly for multiple signal classification (MUSIC) direction-of-arrival (DOA) estimation, and low-precision evaluation can introduce nu…
Analytical Statistics of Vortex Beams in a Turbulent Channel for OAM-Multiplexed FSO Communications
Xinyi Chu, Bo Cao, Renzhi Yuan +3
Orbital angular momentum (OAM) multiplexing can increase the capacity of free-space optical (FSO) communications, whereas atmospheric turbulence causes modal crosstalk and irradian…
Quantum-Limited Symbol-Blind Channel Estimation for Coherent State Discrimination
Hongxu Chen, Renzhi Yuan, Haifeng Yao +1
Residual dispersion breaks temporal-mode matching in photon-starved coherent links. For equiprobable -ary PSK coherent states in a known spectral mode, with unknown symbols and…
Finite-Support Structure in i.i.d.-Constrained Capacity of Finite-Memory Poisson Channels
Renzhi Yuan, Mugen Peng
Discrete-time Poisson channels with finite intersymbol interference provide a natural model for direct-detection optical links in which multipath memory and signal-dependent shot n…
Channel Modeling of Satellite-to-Underwater Laser Communication Links: An Analytical-Monte Carlo Hybrid Approach
Zhixing Wang, Renzhi Yuan, Haifeng Yao +2
Channel modeling for satellite-to-underwater laser communication (StULC) links remains challenging due to long distances and the diversity of the channel constituents. The StULC ch…
Multi-Stage CD-Kennedy Receiver for QPSK Modulated CV-QKD in Turbulent Channels
Renzhi Yuan, Zhixing Wang, Shouye Miao +4
Continuous variable-quantum key distribution (CV-QKD) protocols attract increasing attentions in recent years because they enjoy high secret key rate (SKR) and good compatibility w…
Joint Communication and Radar Sensing for Terahertz Space-Air-Ground Integrated Networks (SAGIN)
Chong Han, Weijun Gao, Zhepu Yin +3
The transition from isolated systems to integrated solutions has driven the development of space-air-ground integrated networks (SAGIN) as well as the integration of communication…
Sensing-Assisted Beam Tracking with Real-Time Beamwidth Adaptation for THz Communications
Wuhan Chen, Yuheng Fan, Chuang Yang +1
Terahertz (THz) communications, with their substantial bandwidth, are essential for meeting the ultra-high data rate demands of emerging high-mobility scenarios such as vehicular-t…
Hybrid Precoding With Low-Resolution PSs for Wideband Terahertz Communication Systems in The Face of Beam Squint
Yang Wang, Chuang Yang, Mugen Peng
Terahertz (THz) communication is considered one of the most critical technologies for 6G because of its abundant bandwidth. To compensate the high propagation of THz, analog/digita…