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12 papers · 2 filters
Sphere Decoding Revisited
Zheng Wang, Cong Ling, Shi Jin +2
In this paper, the paradigm of sphere decoding (SD) for solving the integer least square problem (ILS) is revisited, where extra degrees of freedom are introduced to exploit the de…
Joint Low-Rank and Sparse Bayesian Channel Estimation for Ultra-Massive MIMO Communications
Jianghan Ji, Cheng-Xiang Wang, Shuaifei Chen +3
This letter investigates channel estimation for ultra-massive multiple-input multiple-output (MIMO) communications. We propose a joint low-rank and sparse Bayesian estimation (LRSB…
Finite-blocklength Fluid Antenna Systems With Spatial Block-Correlation Channel Model
Zhentian Zhang, Kai-Kit Wong, David Morales-Jimenez +4
Massive connectivity with ultra-low latency and high reliability necessitates fundamental advances in future communication networks operating under finite-blocklength (FBL) transmi…
Massive MIMO-OFDM Channel Acquisition with Time-Frequency Phase-Shifted Pilots
Jinke Tang, Xiqi Gao, Li You +5
In this paper, we propose a channel acquisition approach with time-frequency phase-shifted pilots (TFPSPs) for massive multi-input multi-output orthogonal frequency division multip…
Probabilistic ODMA Receiver with Low-Complexity Algorithm for MIMO Unsourced Random Access
Zhentian Zhang, Jian Dang, Zaichen Zhang
In this work, we present the design for both pilot-uncoupled and pilot-free on-off multiple access (ODMA) receivers in unsourced random access (URA) for multiple-input multiple-out…
Continuous Aperture Array (CAPA)-Based Multi-Group Multicast Communications
Mengyu Qian, Xidong Mu, Li You +1
A continuous aperture array (CAPA)-based multi-group multicast communication system is investigated. An integral-based CAPA multi-group multicast beamforming design is formulated f…