A 3-D hybrid dynamic channel model for indoor THz communications

Zhang, Yan; Zhao, Lijuan; He, Zhiyuan

doi:10.23919/jcc.2021.05.004

Cited by 16 publications

(6 citation statements)

References 36 publications

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“…Recently, THz communication, as an emerging technology, has been widely studied in indoor/outdoor, nanonetwork and space communications. A three-dimensional (3-D) dynamic indoor THz channel model [25] is proposed by means of combining deterministic and stochastic modeling approaches. Clusters are randomly distributed in the indoor environment and each ray is characterized with consideration of molecular absorption and diffuse scattering.…”

Section: B Thz Communicationmentioning

confidence: 99%

“…Ship A is stationary, and ship B is moving. The Doppler frequency offset caused by relative movement can be calculated from (25). In the simulation, the starting point E is set to (-200,20), the end point F is set to (200,20), the transverse distance is the distance from E to F. As the two ships approach and move away, the Doppler frequency offset decreases at first, then increases gradually, and finally remains unchanged.…”

Section: Doppler Frequency Offsetmentioning

confidence: 99%

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Retracted: A Novel Adaptive Terahertz System for Reliable and Efficient Maritime Communications Under Hostile Sea Conditions

Feng

Pan

et al. 2022

IEEE Access

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Terahertz (THz) frequency band has been widely used in indoor, outdoor and space communications due to its advantage of large available bandwidth. However, limited research has been conducted to apply THz technique in maritime communications as hostile sea conditions cause significant path loss, thus leading to unacceptable signal error rate. In this paper, we propose a novel adaptive THz maritime communication system to tackle the above-mentioned challenge. Specifically, we design a joint source-channel coding scheme by using system random linear network coding (sRLNC) and Reed-Solomon (RS) to ensure transmission reliability. To further improve the transmission efficiency, we propose a novel triple-channel communication architecture facilitated by a very high frequency (VHF) feedback channel. With this design, the source data can be transmitted via the THz main channel while the coding redundancy is dispatched in the auxiliary channel. Meanwhile, the feedback channel allows sender to use an adaptive mechanism to achieve the transmission efficiency with higher transmission rate over long communication distance. In addition, we adopt the Doppler frequency offset in maritime environment to compensate both relative movement between communication parties and adversarial maritime factors, e.g., strong wind and extreme sea states. Simulation results demonstrate that our proposed THz system has remarkable capability not only to improve the communication efficiency up to 20Gbps compared to those conventional high frequency (HF), VHF and millimeter wave communication systems but also to transmit data over a longer distance with lower BERs.

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Section: B Thz Communicationmentioning

confidence: 99%

Section: Doppler Frequency Offsetmentioning

confidence: 99%

Retracted: A Novel Adaptive Terahertz System for Reliable and Efficient Maritime Communications Under Hostile Sea Conditions

Feng

Pan

et al. 2022

IEEE Access

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“…In the selection of MIMO antenna, since the reconnaissance and combat integrated UAV needs to have the function of cruising strike at the same time, the results of the omnidirectional channel model and the directional channel model should be considered. Military UAVs require highly directional antennas to ensure the huge bandwidth to reach such ultra-high data rates and meet massive wireless data traffic demands (Zhang et al, 2021). Meanwhile, the directional channel model is of great significance for the correct implementation of MIMO systems, so this paper further investigates the channel characteristics of the direction with the strongest energy received at the receiver.…”

Section: Modeling Scenario Characterizationmentioning

confidence: 99%

Millimeter Wave Spatial Statistical Channel Model for High-altitude Military UAV Battlefield Situation Awareness

Yang

Pan³

2023

Preprint

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A high-altitude military UAV air-to-ground scenario model is established for the battlefield scenario without base station, the MIMO antenna array technology is used to improve the channel communication performance, and the spatial statistical channel model (SSCM) of this scenario is constructed in this paper. According to the simulation results, the dependence of the channel on T-R separation distance, frequency, rain rate and antenna HPBW parameters was investigated, the large-scale fading and small-scale fading characteristics was analyzed. By calculating and analyzing the condition number and rank of the channel transmission matrix, the spatial multiplexing under different MIMO antenna arrays was investigated. The simulation results can provide a theoretical basis for future high-altitude military UAV battlefield situation awareness frequency selection and antenna design.

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“…In [27], a multi-ray propagation model incorporating the line-of-sight (LoS), reflected, scattered, and diffracted paths was proposed and validated by the experimental measurements. In [28], a hybrid modeling approach which combines the deterministic and stochastic modeling methods was proposed. This channel model considered three propagation mechanisms, including LoS, reflection, and scattering.…”

Section: Introductionmentioning

confidence: 99%

A Novel THz Massive MIMO Beam Domain Channel Model for 6G Wireless Communication Systems

Wang

Huang

et al. 2023

IEEE Trans. Veh. Technol.

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In this paper, a three dimensional (3D) geometry based stochastic model (GBSM) considering planar antenna array is firstly proposed for the sixth generation (6G) terahertz (THz) massive multiple-input multiple-output (MIMO) wireless communication systems. Then, a novel beam domain channel model (BDCM) is derived from the proposed GBSM based on the Fourier transform matrix from the spatial domain to the angle domain in horizontal and vertical directions simultaneously. The THz propagation characteristics, including non-negligible diffuse scattering and limited order of reflection, are considered in these two channel models. In addition, the proposed GBSM and BDCM can capture the spherical wavefront and spatial non-stationarity characteristics in massive MIMO channels by deriving steering vectors of near-field clusters and partly visible clusters, respectively. The angle-domain sparsity property of the BDCM can be observed, which helps reduce the complexity of the GBSM and improve the mathematical tractability. Typical statistical properties of the proposed GBSM and BDCM are derived and compared. The effects of the spherical wavefront on space-time-frequency correlation functions (STF-CFs) and channel capacity are also studied for the proposed GBSM and BDCM. The power leakage of the BDCM caused by the spherical wavefront and visible region (VR) is thoroughly analyzed. It is found that the statistical properties of the GBSM and BDCM fit well and are considerably influenced by the spherical wavefront and VRs.

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A 3-D hybrid dynamic channel model for indoor THz communications

Cited by 16 publications

References 36 publications

Retracted: A Novel Adaptive Terahertz System for Reliable and Efficient Maritime Communications Under Hostile Sea Conditions

Retracted: A Novel Adaptive Terahertz System for Reliable and Efficient Maritime Communications Under Hostile Sea Conditions

Millimeter Wave Spatial Statistical Channel Model for High-altitude Military UAV Battlefield Situation Awareness

A Novel THz Massive MIMO Beam Domain Channel Model for 6G Wireless Communication Systems

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