Hybrid Far- and Near-Field Modeling for Reconfigurable Intelligent Surface Assisted V2V Channels: A Sub-Array Partition Based Approach

Jiang, Hao; Xiong, Baiping; Zhang, Hongming; Başar, Ertuğrul

doi:10.1109/twc.2023.3262063

Cited by 43 publications

(14 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unmanned aerial vehicles (UAVs) are capable of performing as mobile base stations (BSs) to support or even replace terrestrial BSs in a wide range of civilian and military applications [1] [2]. Explicitly, due to their flexibility, UAVs can meet the demand for data traffic at a relatively low cost in wireless networks [3].…”

Section: Introductionmentioning

confidence: 99%

Sum rate maximization for UAV assisted maritime wireless networks

Jiang,

Chang,

Liao

et al. 2024

Fourth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2023)

View full text Add to dashboard Cite

In this paper, we study the sum rate maximization problem involved in an unmanned aerial vehicle (UAV)-assisted maritime wireless network. Explicitly, the quadratic transform is first applied to transform the sum rate maximization problem into a tractable one by introducing an auxiliary variable. However, the recast objective function is nondifferentiable at some points, making it hard to solve especially when using gradient based methods. In order to tackle this problem, we propose a projected steepest descent algorithm, where smoothing and normalization methods are also used. Finally, simulation results are provided for characterizing that the proposed algorithm is capable of providing an improved sum rate performance for the UAV-assisted maritime wireless network.

show abstract

Section: Introductionmentioning

confidence: 99%

Sum rate maximization for UAV assisted maritime wireless networks

Jiang,

Chang,

Liao

et al. 2024

Fourth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2023)

View full text Add to dashboard Cite

show abstract

“…Based on the vehicular channel characteristics revealed by channel measurement campaigns, extensive vehicular channel models have been proposed. To model time non-stationarity, the authors in [11] and [12] utilized the methods of capturing time-varying channel statistics and birth-death process, respectively. However, the proposed models in [11], [12] cannot explore the impact of VTDs on vehicular channel characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…To model time non-stationarity, the authors in [11] and [12] utilized the methods of capturing time-varying channel statistics and birth-death process, respectively. However, the proposed models in [11], [12] cannot explore the impact of VTDs on vehicular channel characteristics. To overcome this limitation, the authors in [13] proposed a V2V channel model and attempted to explore the vehicular channel characteristics under high and low VTD conditions by dividing static and dynamic scatterers.…”

Section: Introductionmentioning

confidence: 99%

Transforming Fading Channel From Fast to Slow: Intelligent Refracting Surface Aided High-Mobility Communication

Huang

Zheng

Zhang

2022

IEEE Trans. Wireless Commun.

View full text Add to dashboard Cite

In this paper, a novel channel modeling approach, named light detection and ranging (LiDAR)-aided geometrybased stochastic modeling (LA-GBSM), is developed. Based on the developed LA-GBSM approach, a new millimeter wave (mmWave) channel model for sixth-generation (6G) vehicular intelligent sensing-communication integration is proposed, which can support the design of intelligent transportation systems (ITSs). The proposed LA-GBSM is accurately parameterized under high, medium, and low vehicular traffic density (VTD) conditions via a sensing-communication simulation dataset with LiDAR point clouds and scatterer information for the first time. Specifically, by detecting dynamic vehicles and static building/tress through LiDAR point clouds via machine learning, scatterers are divided into static and dynamic scatterers. Furthermore, statistical distributions of parameters, e.g., distance, angle, number, and power, related to static and dynamic scatterers are quantified under high, medium, and low VTD conditions. To mimic channel non-stationarity and consistency, based on the quantified statistical distributions, a new visibility region (VR)-based algorithm in consideration of newly generated static/dynamic scatterers is developed. Key channel statistics are derived and simulated. By comparing simulation results and raytracing (RT)-based results, the utility of the proposed LA-GBSM is verified.

show abstract

“…However, accurate dynamic electromagnetic wave regulation relies on the efficient and precise solution of the RIS regulation matrix. There are many literature discussions on the channel model of RIS [4] [5]. A significant body of literature offers different mechanisms for solving the RIS regulation matrix to enable channel regulation [6] [7], wireless energy transmission [8] [9], information modulation [10], and to address coexistence problems in RIS networks [11] [12].…”

Section: Introductionmentioning

confidence: 99%

RIS Channel Decoupling Based on Decomposition of Receiving and Transmission Matrix Components of RIS Regulation Matrix

Zhao¹,

Lv²

2022

Preprint

View full text Add to dashboard Cite

<p>In this letter, a novel reconfigurable intelligent surface (RIS) channel decoupling based on a decomposition of receiving and transmitting matrix components of RIS regulation matrix is proposed to simplify the calculation of RIS beamforming matrix. The idea is to decompose an RIS regulation matrix into a receiving matrix and a transmitting matrix. Thus, the decoupling of RIS cascaded channels is realized for the calculation of the regulation matrix. Furthermore, the single UE and multi-UE scenarios are discussed respectively, and the corresponding solutions are given. The proposed schemes are simulated and validated. The numerical simulation results indicate that the simplified algorithm based on channel decoupling can achieve the expected performance.</p>

show abstract

Hybrid Far- and Near-Field Modeling for Reconfigurable Intelligent Surface Assisted V2V Channels: A Sub-Array Partition Based Approach

Cited by 43 publications

References 30 publications

Sum rate maximization for UAV assisted maritime wireless networks

Sum rate maximization for UAV assisted maritime wireless networks

Transforming Fading Channel From Fast to Slow: Intelligent Refracting Surface Aided High-Mobility Communication

RIS Channel Decoupling Based on Decomposition of Receiving and Transmission Matrix Components of RIS Regulation Matrix

Contact Info

Product

Resources

About