6 papers
Joint Channel Estimation and Data Detection for Multi-LEO-Satellite Cell-Free OTFS Uplinks
Gangle Sun, Tianhao Liu, Jun Tian +6
Cell-free networks formed by multiple low Earth orbit (LEO) satellites offer a promising architecture for ubiquitous connectivity, but their cooperative reception is challenged by…
Deep-Unfolded Massive Grant-Free Transmission in Cell-Free Wireless Communication Systems
Gangle Sun, Mengyao Cao, Wenjin Wang +2
Grant-free transmission and cell-free communication are vital in improving coverage and quality-of-service for massive machine-type communication. This paper proposes a novel frame…
Low-Coherence Sequence Design Under PAPR Constraints
Gangle Sun, Wenjin Wang, Wei Xu +1
Low-coherence sequences with low peak-to-average power ratio (PAPR) are crucial for multi-carrier wireless communication systems and are used for pilots, spreading sequences, and s…
Polar-Coded Tensor-Based Unsourced Random Access with Soft Decoding
Jiaqi Fang, Yan Liang, Gangle Sun +4
The unsourced random access (URA) has emerged as a viable scheme for supporting the massive machine-type communications (mMTC) in the sixth generation (6G) wireless networks. Notab…
Joint Channel Estimation and Prediction for Massive MIMO with Frequency Hopping Sounding
Yiming Zhu, Jiawei Zhuang, Gangle Sun +3
In massive multiple-input multiple-output (MIMO) systems, the downlink transmission performance heavily relies on accurate channel state information (CSI). Constrained by the trans…
Deep-Unfolded Joint Activity and Data Detection for Grant-Free Transmission in Cell-Free Systems
Gangle Sun, Wenjin Wang, Wei Xu +1
Massive grant-free transmission and cell-free wireless communication systems have emerged as pivotal enablers for massive machine-type communication. This paper proposes a deep-unf…