13 papers
Prior-Aided Iterative Channel Reconstruction with Optimized Frame Structure for DSE Mitigation in CP-OTFS-Based LEO Satellite Systems
Yiyan Cheng, Tiejun Lv, Yashuai Cao +2
Orthogonal time frequency space (OTFS) modulation has emerged as a promising solution to mitigate the severe Doppler shift in low Earth orbit (LEO) satellite communications. Howeve…
Hyperbolic Frequency Multicarrier Modulation for Wideband Linear Time-Varying Channels
Xuehan Wang, Jinhong Yuan, Jintao Wang +2
Numerous multicarrier modulation schemes have been proposed recently to enhance the performance in narrowband doubly dispersive channels for emerging high-mobility applications. Ho…
Doppler Shift Keying Modulation for Uplink Multiple Access over Doubly-Dispersive Channels
Xuehan Wang, Jintao Wang, Hai Lin +4
The delay-Doppler (DD) domain modulation has been regarded as one of the most competitive candidates to support wireless communications for emerging high-mobility applications in t…
Channel Estimation with Hierarchical Sparse Bayesian Learning for ODDM Systems
Jiasong Han, Xuehan Wang, Jingbo Tan +4
Orthogonal delay-Doppler division multiplexing (ODDM) is a promising modulation technique for reliable communications in high-mobility scenarios. However, the existing channel esti…
Achieving Full Multipath Diversity by Random Constellation Rotation: a Theoretical Perspective
Xuehan Wang, Jinhong Yuan, Jintao Wang +1
Diversity is an essential concept associated with communication reliability in multipath channels since it determines the slope of bit error rate performance in the medium to high…
RSMA-Assited and Transceiver-Coordinated ICI Management for MIMO-OFDM System
Hengyu Zhang, Xuehan Wang, Xu Shi +2
High-mobility scenarios are becoming increasingly critical in next-generation communication systems. While multiple-input multiple-output orthogonal frequency division multiplexing…
On the Characterization and Evaluation of Doppler Squint in Wideband ODDM Systems
Xuehan Wang, Jinhong Yuan, Jintao Wang +1
The recently proposed orthogonal delay-Doppler division multiplexing (ODDM) modulation has been demonstrated to enjoy excellent reliability over doubly-dispersive channels. However…
Dynamic SINR-Guided Iterative Interference Cancellation for ODDM Systems in Doubly Dispersive Channels
Jiasong Han, Xuehan Wang, Jintao Wang
Orthogonal delay-Doppler division multiplexing (ODDM) modulation has recently gained significant attention as a promising candidate to promote the communication reliability in high…
Data-Driven Modulation Optimization with LMMSE Equalization for Reliability Enhancement in Underwater Acoustic Communications
Xuehan Wang, Hengyu Zhang, Jintao Wang +2
Ultra-reliable underwater acoustic (UWA) communications serve as one of the key enabling technologies for future space-air-ground-underwater integrated networks. However, the relia…
Universal Modem Generation with Inherent Adaptability to Variant Underwater Acoustic Channels: a Data-Driven Perspective
Xiaoquan You, Hengyu Zhang, Xuehan Wang +1
In underwater acoustic (UWA) communication, orthogonal frequency division multiplexing (OFDM) is commonly employed to mitigate the inter-symbol interference (ISI) caused by delay s…
Modem Optimization of High-Mobility Scenarios: A Deep-Learning-Inspired Approach
Hengyu Zhang, Xuehan Wang, Jingbo Tan +1
The next generation wireless communication networks are required to support high-mobility scenarios, such as reliable data transmission for high-speed railways. Nevertheless, widel…
Sparse Estimation for XL-MIMO with Unified LoS/NLoS Representation
Xu Shi, Xuehan Wang, Jingbo Tan +1
Extremely large-scale antenna array (ELAA) is promising as one of the key ingredients for the sixth generation (6G) of wireless communications. The electromagnetic propagation of s…
Input-Output Relation and Low-Complexity Receiver Design for CP-OTFS Systems with Doppler Squint
Xuehan Wang, Xu Shi, Jintao Wang +1
In orthogonal time frequency space (OTFS) systems, the impact of frequency-dependent Doppler which is referred to as the Doppler squint effect (DSE) is accumulated through longer d…