568 citations · 2.1k across the 50 of their papers we have counts for
14 papers · 1 filter
A Primer on Near-Field Communications for Next-Generation Multiple Access
Chongjun Ouyang, Zhaolin Wang, Yan Chen +2
Multiple-antenna technologies are advancing toward the development of extremely large aperture arrays and the utilization of extremely high frequencies, driving the progress of nex…
Near-Field Sensing Enabled Predictive Beamforming: From Estimation to Tracking
Hao Jiang, Zhaolin Wang, Yuanwei Liu
A near-field sensing (NISE) enabled predictive beamforming framework is proposed to facilitate wireless communications with high-mobility channels. Unlike conventional far-field se…
Diversity and Multiplexing for Continuous Aperture Array (CAPA)-Based Communications
Chongjun Ouyang, Zhaolin Wang, Xingqi Zhang +1
A general fading model for multipath channels between two non-parallel continuous-aperture arrays (CAPAs) is proposed. Building on this model, the performance of diversity and mult…
Simultaneously Transmitting and Reflecting Surfaces for Ubiquitous Next Generation Multiple Access in 6G and Beyond
Xidong Mu, Jiaqi Xu, Zhaolin Wang +1
The ultimate goal of next generation multiple access (NGMA) is to support massive terminals and facilitate multiple functionalities over the limited radio resources of wireless net…
Hybrid Beamforming Design for Near-Field ISAC with Modular XL-MIMO
Chunwei Meng, Dingyou Ma, Zhaolin Wang +3
A novel modular extremely large-scale multiple-input-multiple-output (XL-MIMO) integrated sensing and communication (ISAC) framework is proposed in this paper. We consider a downli…
Near-Field Localization and Sensing with Large-Aperture Arrays: From Signal Modeling to Processing
Zhaolin Wang, Parisa Ramezani, Yuanwei Liu +1
The signal processing community is currently witnessing a growing interest in near-field signal processing, driven by the trend towards the use of large aperture arrays with high s…
On the Impact of Reactive Region on the Near-Field Channel Gain
Chongjun Ouyang, Zhaolin Wang, Boqun Zhao +2
The near-field channel gain is analyzed by considering both radiating and reactive components of the electromagnetic field. Novel expressions are derived for the channel gains of s…
Wideband Beamforming for Near-Field Communications with Circular Arrays
Yunhui Guo, Yang Zhang, Zhaolin Wang +1
The beamforming performance of the uniform circular array (UCA) in near-field wideband communication systems is investigated. Compared to uniform linear array (ULA), UCA exhibits u…
Performance Bounds of Near-Field Sensing with Circular Arrays
Zhaolin Wang, Xidong Mu, Yuanwei Liu
The performance bounds of near-field sensing are studied for circular arrays, focusing on the impact of bandwidth and array size. The closed-form Cramer-Rao bound (CRBs) for angle…
Performance Analysis of Near-Field Sensing in Wideband MIMO Systems
Zhaolin Wang, Xidong Mu, Yuanwei Liu
The performance of near-field sensing (NISE) in a legacy wideband multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) communication system is an…
Adaptive TTD Configurations for Near-Field Communications: An Unsupervised Transformer Approach
Hsienchih Ting, Zhaolin Wang, Yuanwei Liu
True-time delayers (TTDs) are popular analog devices for facilitating near-field wideband beamforming subject to the spatial-wideband effect. In this paper, an adaptive TTD configu…
Near Field Communications for DMA-NOMA Networks
Zheng Zhang, Yuanwei Liu, Zhaolin Wang +2
A novel near-field transmission framework is proposed for dynamic metasurface antenna (DMA)-enabled non-orthogonal multiple access (NOMA) networks. The base station (BS) exploits t…
Sense-Then-Train: An Active-Sensing-Based Beam Training Design for Near-Field MIMO Systems
Hao Jiang, Zhaolin Wang, Yuanwei Liu
An active-sensing-based sense-then-train (STT) scheme is proposed for beam training in near-field multiple-input multiple-output (MIMO) systems. Compared to conventional codebook-b…
Near-Field Communications: A Comprehensive Survey
Yuanwei Liu, Chongjun Ouyang, Zhaolin Wang +3
Multiple-antenna technologies are evolving towards larger aperture sizes, extremely high frequencies, and innovative antenna types. This evolution is fostering the emergence of nea…