170 citations · 435 across the 47 of their papers we have counts for
26 papers · 1 filter
OTFS-based Robust MMSE Precoding Design in Over-the-air Computation
Dongkai Zhou, Jing Guo, Siqiang Wang +4
Over-the-air computation (AirComp), as a data aggregation method that can improve network efficiency by exploiting the superposition characteristics of wireless channels, has recei…
On the Pulse Shaping for Delay-Doppler Communications
Shuangyang Li, Weijie Yuan, Zhiqiang Wei +3
In this paper, we study the pulse shaping for delay-Doppler (DD) communications. We start with constructing a basis function in the DD domain following the properties of the Zak tr…
Integrated Sensing and Communications: Recent Advances and Ten Open Challenges
Shihang Lu, Fan Liu, Yunxin Li +11
It is anticipated that integrated sensing and communications (ISAC) would be one of the key enablers of next-generation wireless networks (such as beyond 5G (B5G) and 6G) for suppo…
Deep Learning-empowered Predictive Precoder Design for OTFS Transmission in URLLC
Chang Liu, Shuangyang Li, Weijie Yuan +2
To guarantee excellent reliability performance in ultra-reliable low-latency communications (URLLC), pragmatic precoder design is an effective approach. However, an efficient preco…
Performance of OTFS-NOMA Scheme for Coordinated Direct and Relay Transmission Networks in High-Mobility Scenarios
Yao Xu, Zhen Du, Weijie Yuan +2
In this letter, an orthogonal time frequency space (OTFS) based non-orthogonal multiple access (NOMA) scheme is investigated for the coordinated direct and relay transmission syste…
OTFS-SCMA: A Downlink NOMA Scheme for Massive Connectivity in High Mobility Channels
Haifeng Wen, Weijie Yuan, Zilong Liu +1
This paper studies a downlink system that combines orthogonal-time-frequency-space (OTFS) modulation and sparse code multiple access (SCMA) to support massive connectivity in high-…
New Delay Doppler Communication Paradigm in 6G era: A Survey of Orthogonal Time Frequency Space (OTFS)
Weijie Yuan, Shuangyang Li, Zhiqiang Wei +4
In the 6G era, space-air-Ground integrated networks (SAGIN) are anticipated to deliver global coverage, necessitating support for a diverse array of emerging applications in high-m…
Orthogonal Time Frequency Space Modulation -- Part III: ISAC and Potential Applications
Weijie Yuan, Zhiqiang Wei, Shuangyang Li +2
The first two parts of this tutorial on orthogonal time frequency space (OTFS) modulation have discussed the fundamentals of delay-Doppler (DD) domain communications as well as som…
Orthogonal Time Frequency Space Modulation -- Part II: Transceiver Designs
Shuangyang Li, Weijie Yuan, Zhiqiang Wei +2
The fundamental concepts and challenges of orthogonal time frequency space (OTFS) modulation have been reviewed in Part I of this three-part tutorial. In this second part, we provi…
Orthogonal Time Frequency Space Modulation -- Part I: Fundamentals and Challenges Ahead
Zhiqiang Wei, Shuangyang Li, Weijie Yuan +2
This letter is the first part of a three-part tutorial on orthogonal time frequency space (OTFS) modulation, which is a promising candidate waveform for future wireless networks. T…
On the Fundamental Tradeoff of Integrated Sensing and Communications Under Gaussian Channels
Yifeng Xiong, Fan Liu, Yuanhao Cui +3
ISAC is recognized as a promising technology for the next-generation wireless networks, which provides significant performance gains over individual S&C systems via the shared use…
Optimal Precoding Design for Monostatic ISAC Systems: MSE Lower Bound and DoF Completion
Yuanhao Cui, Fan Liu, Weijie Yuan +3
In this letter, we study the parameter estimation performance for monostatic downlink integrated sensing and communications (ISAC) systems. In particular, we analyze the mean squar…
Predictive Beamforming for Integrated Sensing and Communication in Vehicular Networks: A Deep Learning Approach
Chang Liu, Weijie Yuan, Shuangyang Li +3
The implementation of integrated sensing and communication (ISAC) highly depends on the effective beamforming design exploiting accurate instantaneous channel state information (IC…
Faster-than-Nyquist Asynchronous NOMA Outperforms Synchronous NOMA
Shuangyang Li, Zhiqiang Wei, Weijie Yuan +4
Faster-than-Nyquist (FTN) signaling aided non-orthogonal multiple access (NOMA) is conceived and its achievable rate is quantified in the presence of random link delays of the diff…
A Novel ISAC Transmission Framework based on Spatially-Spread Orthogonal Time Frequency Space Modulation
Shuangyang Li, Weijie Yuan, Chang Liu +4
In this paper, we propose a novel integrated sensing and communication (ISAC) transmission framework based on the spatially-spread orthogonal time frequency space (SS-OTFS) modulat…
Performance Analysis and Window Design for Channel Estimation of OTFS Modulation
Zhiqiang Wei, Weijie Yuan, Shuangyang Li +2
In this paper, we investigate the impacts of transmitter and receiver windows on orthogonal time-frequency space (OTFS) modulation and propose a window design to improve the OTFS c…
Off-grid Channel Estimation with Sparse Bayesian Learning for OTFS Systems
Zhiqiang Wei, Weijie Yuan, Shuangyang Li +2
This paper proposes an off-grid channel estimation scheme for orthogonal time-frequency space (OTFS) systems adopting the sparse Bayesian learning (SBL) framework. To avoid channel…
Cross Domain Iterative Detection for Orthogonal Time Frequency Space Modulation
Shuangyang Li, Weijie Yuan, Zhiqiang Wei +1
Recently proposed orthogonal time frequency space (OTFS) modulation has been considered as a promising candidate for accommodating various emerging communication and sensing applic…
Hybrid MAP and PIC Detection for OTFS Modulation
Shuangyang Li, Weijie Yuan, Zhiqiang Wei +4
Orthogonal time frequency space (OTFS) modulation has attracted substantial attention recently due to its great potential of providing reliable communications in high-mobility scen…
Performance Analysis of Coded OTFS Systems over High-Mobility Channels
Shuangyang Li, Jinhong Yuan, Weijie Yuan +3
Orthogonal time frequency space (OTFS) modulation is a recently developed multi-carrier multi-slot transmission scheme for wireless communications in high-mobility environments. In…
Transmitter and Receiver Window Designs for Orthogonal Time Frequency Space Modulation
Zhiqiang Wei, Weijie Yuan, Shuangyang Li +2
In this paper, we investigate the impacts of transmitter and receiver windows on the performance of orthogonal time-frequency space (OTFS) modulation and propose window designs to…
Orthogonal Time-Frequency Space Modulation: A Promising Next-Generation Waveform
Zhiqiang Wei, Weijie Yuan, Shuangyang Li +4
The sixth-generation (6G) wireless networks are envisioned to provide a global coverage for the intelligent digital society of the near future, ranging from traditional terrestrial…
Iterative Detection for Orthogonal Time Frequency Space Modulation with Unitary Approximate Message Passing
Zhengdao Yuan, Fei Liu, Weijie Yuan +3
The orthogonal-time-frequency-space (OTFS) modulation has emerged as a promising modulation scheme for high mobility wireless communications. To harvest the time and frequency dive…
Iterative Receivers for Downlink MIMO-SCMA: Message Passing and Distributed Cooperative Detection
Weijie Yuan, Nan Wu, Qinghua Guo +3
The rapid development of the mobile communications requires ever higher spectral efficiency. The non-orthogonal multiple access (NOMA) has emerged as a promising technology to furt…