3-D MIMO: How Much Does It Meet Our Expectations Observed From Channel Measurements?

Zhang, Jianhua; Zhang, Yuxiang; Yu, Yawei; Xu, Ruijie; Zheng, Qingfang; Zhang, Ping

doi:10.1109/jsac.2017.2710758

Cited by 106 publications

(40 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Consequently, railway communications are required to evolve from handling only the critical signaling applications to support various high‐data‐rate applications . In order to realize this vision, the millimeter wave (mmWave) band has become important to overcome spectrum scarcity, and many efforts have been carried out to develop novel technologies such as multiple‐input–multiple‐output (MIMO) beamforming , resource allocation, and multiple access. The 5GCHAMPION project , funded by the H2020 Europe–Korea collaborative program, aims to develop key enabling technologies for a proof‐of‐concept environment to be showcased at the 2018 Winter Olympics in PyeongChang, Korea.…”

Section: Introductionmentioning

confidence: 99%

Stochastic Channel Modeling for Railway Tunnel Scenarios at 25 GHz

He¹,

Ai²,

Guan³

et al. 2018

ETRI Journal

View full text Add to dashboard Cite

More people prefer using rail traffic for travel or for commuting owing to its convenience and flexibility. The railway scenario has become an important communication scenario in the fifth generation era. The communication system should be designed to support high-data-rate demands with seamless connectivity at a high mobility. In this paper, the channel characteristics are studied and modeled for the railway tunnel scenario with straight and curved route shapes. On the basis of measurements using the "Mobile Hotspot Network" system, a threedimensional ray tracer (RT) is calibrated and validated for the target scenarios. More channel characteristics are explored via RT simulations at 25.25 GHz with a 500-MHz bandwidth. The key channel parameters are extracted, provided, and incorporated into a 3rd-Generation-Partnership-Project-like stochastic channel generator. The necessary channel information can be practically realized, which can support the link-level and system-level design of the communication system in similar scenarios.

show abstract

Section: Introductionmentioning

confidence: 99%

Stochastic Channel Modeling for Railway Tunnel Scenarios at 25 GHz

He¹,

Ai²,

Guan³

et al. 2018

ETRI Journal

View full text Add to dashboard Cite

show abstract

“…Due to the limitations for the measurement campaign, just the large-scale and small-scale parameters between measured and simulated channel are compared for validation. We separate large-scale fading and small-scale fading by a sliding/overlapped window (size of 20 wavelengths) with an interval of ten wavelengths [25,42].…”

Section: Ray Tracing Validationmentioning

confidence: 99%

A Simplified Multipath Component Modeling Approach for High-Speed Train Channel Based on Ray Tracing

Yang

et al. 2017

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

High-speed train (HST) communications at millimeter-wave (mmWave) band have received a lot of attention due to their numerous high-data-rate applications enabling smart rail mobility. Accurate and effective channel models are always critical to the HST system design, assessment, and optimization. A distinctive feature of the mmWave HST channel is that it is rapidly time-varying. To depict this feature, a geometry-based multipath model is established for the dominant multipath behavior in delay and Doppler domains. Because of insufficient mmWave HST channel measurement with high mobility, the model is developed by a measurementvalidated ray tracing (RT) simulator. Different from conventional models, the temporal evolution of dominant multipath behavior is characterized by its geometry factor that represents the geometrical relationship of the dominant multipath component (MPC) to HST environment. Actually, during each dominant multipath lifetime, its geometry factor is fixed. To statistically model the geometry factor and its lifetime, the dominant MPCs are extracted within each local wide-sense stationary (WSS) region and are tracked over different WSS regions to identify its "birth" and "death" regions. Then, complex attenuation of dominant MPC is jointly modeled by its delay and Doppler shift both which are derived from its geometry factor. Finally, the model implementation is verified by comparison between RT simulated and modeled delay and Doppler spreads.

show abstract

“…e similar works in [22,23] analyze the characteristics of MPC propagation and verify the availability of the vehicular communication system at 60 GHz. Based on channel measurement with rotating directional antennas, the DS, path loss exponent (PLE), and angular spread of arrival (ASA) are compared between line-of-sight (LOS) and NLOS conditions at 60 GHz under outdoor environments in [24,25]. e channel impulse response and scattering functions, as well as the DS, are obtained from 38 GHz to 60 GHz channel measurements in [26].…”

Section: Introductionmentioning

confidence: 99%

Vehicular Channel in Urban Environments at 23 GHz for Flexible Access Common Spectrum Application

Wang

Yang

et al. 2019

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

With the development of the vehicular network, new radio technologies have been in the spotlight for maximizing the utilization of the limited radio spectrum resource while accommodating the increasing amount of services and applications in the wireless mobile networks. New spectrum policies based on dynamic spectrum access technology such as flexible access common spectrum (FACS) have been adopted by the Korea Communications Commission (KCC). 23 GHz bands have been allocated to FACS bands by the KCC, which is expected extensively for vehicular communications. e comprehensive knowledge on the radio channel is essential to effectively support the design, simulation, and development of such radio technologies. In this paper, the characteristics of 23 GHz vehicle-to-infrastructure (V2I) channels are simulated and extracted for the urban environment in Seoul. e path loss, shadow factor, Ricean K-factor, root-mean-square (RMS) delay spread, and angular spreads are characterized from the calibrated ray-tracing simulation results, and it can help researchers have a better understanding of the propagation channel for designing vehicular radio technologies and a communication system in a similar environment.

show abstract

3-D MIMO: How Much Does It Meet Our Expectations Observed From Channel Measurements?

Cited by 106 publications

References 31 publications

Stochastic Channel Modeling for Railway Tunnel Scenarios at 25 GHz

Stochastic Channel Modeling for Railway Tunnel Scenarios at 25 GHz

A Simplified Multipath Component Modeling Approach for High-Speed Train Channel Based on Ray Tracing

Vehicular Channel in Urban Environments at 23 GHz for Flexible Access Common Spectrum Application

Contact Info

Product

Resources

About