9 papers · 1 filter
LEO Satellite-Enabled Random Access with Large Differential Delay and Doppler Shift
Boxiao Shen, Yongpeng Wu, Wenjun Zhang +2
This paper investigates joint device identification, channel estimation, and symbol detection for LEO satellite-enabled grant-free random access systems, specifically targeting sce…
Probabilistic Shaped Multilevel Polar Coding for Wiretap Channel
Li Shen, Yongpeng Wu, Peihong Yuan +3
A wiretap channel is served as the fundamental model of physical layer security techniques, where the secrecy capacity of the Gaussian wiretap channel is proven to be achieved by G…
Massive MIMO-OTFS-Based Random Access for Cooperative LEO Satellite Constellations
Boxiao Shen, Yongpeng Wu, Shiqi Gong +3
This paper investigates joint device identification, channel estimation, and symbol detection for cooperative multi-satellite-enhanced random access, where orthogonal time-frequenc…
Robust Image Semantic Coding with Learnable CSI Fusion Masking over MIMO Fading Channels
Bingyan Xie, Yongpeng Wu, Yuxuan Shi +3
Though achieving marvelous progress in various scenarios, existing semantic communication frameworks mainly consider single-input single-output Gaussian channels or Rayleigh fading…
GLDPC-PC Codes for MIMO Systems with Iterative Detection and Decoding
Binghui Shi, Yongpeng Wu, Yin Xu +3
In this work, we propose the integration of GLDPC codes with short polar-like component codes, termed GLDPC codes with polar component codes (GLDPC-PC). This approach leverages the…
Asynchronous MIMO-OFDM Massive Unsourced Random Access with Codeword Collisions
Tianya Li, Yongpeng Wu, Junyuan Gao +4
This paper investigates asynchronous multiple-input multiple-output (MIMO) massive unsourced random access (URA) in an orthogonal frequency division multiplexing (OFDM) system over…
Unsourced Random Access in MIMO Quasi-Static Rayleigh Fading Channels with Finite Blocklength
Junyuan Gao, Yongpeng Wu, Giuseppe Caire +2
This paper explores the fundamental limits of unsourced random access (URA) with a random and unknown number of active users in MIMO quasi-static Rayleigh fading chann…
GLDPC-PC Codes: Channel Coding Towards 6G Communications
Li Shen, Yongpeng Wu, Yin Xu +3
The sixth generation (6G) wireless communication system will improve the key technical indicators by one to two orders of magnitude, and come with some new features. As a crucial t…
Massive Unsourced Random Access for Near-Field Communications
Xinyu Xie, Yongpeng Wu, Jianping An +3
This paper investigates the unsourced random access (URA) problem with a massive multiple-input multiple-output receiver that serves wireless devices in the near-field of radiation…