Millimeter-Wave Space-Time Propagation Characteristics in Urban Macrocell Scenarios

Zhang, Peize; Li, Jing; Wang, Haiming; You, Xiaohu

doi:10.1109/icc.2019.8761087

Cited by 20 publications

(13 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…GHz and 39 GHz. The result is consistent with the observations of composite delay and angular spreads reported in [1], where larger K-factor likely leads to less detectable MPCs apart from…”

Section: A Composite and Intercluster Channel Characteristicssupporting

confidence: 92%

See 1 more Smart Citation

Radio Propagation Measurements and Cluster-Based Analysis for 5G Millimeter-Wave Cellular Systems in Dense Urban Environments

Zhang¹,

Yang²,

Wang³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Empirical channel modeling is necessary for the deployment of the fifth-generation (5G) millimeter-wave (mmWave) cellular system in actual environments. In this paper, cluster-based analyses of mmWave channel characteristics in two typical dense urban environments are performed. First, radio propagation measurement campaigns are conducted at two primary 5G bands of 28 GHz and 39 GHz in a central business district and a dense residential area. The custom-designed channel sounder supports high-efficiency directional scanning sounding, which helps to collect sufficient data for statistical channel modeling. Next, using an improved autoclustering algorithm, multipath clusters and their scattering sources are identified. Mapping results show that multiple reflections from exterior walls and diffraction over building corners or rooftops enhance the coverage for non-line-of-sight (NLoS) links and the influences of these propagation mechanisms are intuitively embodied as changes in the topologies of deployment environments. Finally, an appropriate measure for cluster-level channel characteristics is provided including cluster number, Ricean K-factor, root mean squared (RMS) delay spread, RMS angular spread, and their correlations. Comparisons of these parameters across two mmWave bands are also given. The measurement and modeling results shed light on a fully understanding of mmWave channels in dense urban environments across multiple bands.

show abstract

Section: A Composite and Intercluster Channel Characteristicssupporting

confidence: 92%

“…The observations from Fig. 7 Table III reports the statistics of intercluster channel parameters including Ricean K-factor and number of clusters C, while composite delay and angular dispersions have been reported in [1].…”

Section: B Reflection and Diffractionmentioning

confidence: 99%

Radio Propagation Measurements and Cluster-Based Analysis for 5G Millimeter-Wave Cellular Systems in Dense Urban Environments

Zhang¹,

Yang²,

Wang³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…In [16], 28 GHz channel measurements were conducted in outdoor courtyard scenario with rotated arXiv:2007.13973v1 [eess.SP] 28 Jul 2020 horn antennas to obtain the path loss model. In [17], [18], channel measurements were conducted at 28 GHz and 39 GHz in outdoor urban macro (UMa) and urban micro (UMi) environments. The path loss, RMS delay spread, and angular spread were investigated.…”

Section: Introductionmentioning

confidence: 99%

Multi-Frequency Multi-Scenario Millimeter Wave MIMO Channel Measurements and Modeling for B5G Wireless Communication Systems

Huang

Wang

Chang

et al. 2020

IEEE J. Select. Areas Commun.

110

View full text Add to dashboard Cite

Millimeter wave (mmWave) bands have been utilized for the fifth generation (5G) communication systems and will no doubt continue to be deployed for beyond 5G (B5G). However, the underlying channels are not fully investigated at multifrequency bands and in multi-scenarios by using the same channel sounder, especially for the outdoor, multiple-input multipleoutput (MIMO), and vehicle-to-vehicle (V2V) conditions. In this paper, we conduct multi-frequency multi-scenario mmWave MIMO channel measurements with 4×4 antennas at 28, 32, and 39 GHz bands for three cases, i.e., the human body and vehicle blockage measurements, outdoor path loss measurements, and V2V measurements. The channel characteristics, including blockage effect, path loss and coverage range, and non-stationarity and spatial consistency, are thoroughly studied. The blockage model, path loss model, and time-varying channel model are proposed for mmWave MIMO channels. The channel measurement and modeling results will be of great importance for further mmWave communication system deployments in indoor hotspot, outdoor, and vehicular network scenarios for B5G. Index Terms-Millimeter wave bands, MIMO vehicle-tovehicle, B5G wireless communication systems, multi-frequency channel measurements, channel modeling.

show abstract

“…where τ 0 and τ 1 denote the first and last time for the PDP exceeding the noise floor, respectively, which can be extracted following the method proposed in [36,37]. To remove the influence of noise, a margin of 10 dB above the noise floor, calculated as the variance of last hundred ns of CIR, is chosen to filter the PDP samples whose magnitude is below this level and these invalid samples are all set to zero.…”

Section: Channel Data Processingmentioning

confidence: 99%

In-building coverage of millimeter-wave wireless networks from channel measurement and modeling perspectives

Zhang

Yang

et al. 2020

Sci. China Inf. Sci.

Self Cite

View full text Add to dashboard Cite

To progress cost-effective deployment of millimeter-wave (mmWave) wireless networks for indoor users, the prediction of indoor-to-indoor (I2I) and outdoor-to-indoor (O2I) coverage based on field measurement studies is of great interest to the future generation mobile communication system. First, measurements in I2I and O2I scenarios, which have advantages in terms of achieving a fair comparison of channel characteristics across different mmWave bands and bandwidths, are performed. Next, the developed dual-slope path loss model with a break-point distance is found to well fit omnidirectional and directional measured I2I data, especially at 39.5 GHz, revealing that the transition from lit or shadow regions to totally blocked regions is abrupt. Combined with space-time propagation characteristics, the indoor blockage effect on path loss and angular spread is investigated, therein being essential for the design of beam-steering and tracking algorithms. Double-directional measurement results show that most dominant paths arrive along the line-ofsight path, and only a few in-building reflections can be detected in higher frequency bands. Based on the joint analysis of channel measurement and modeling results, several mmWave network design and in-building coverage enhancement insights are presented.

show abstract

Millimeter-Wave Space-Time Propagation Characteristics in Urban Macrocell Scenarios

Cited by 20 publications

References 10 publications

Radio Propagation Measurements and Cluster-Based Analysis for 5G Millimeter-Wave Cellular Systems in Dense Urban Environments

Radio Propagation Measurements and Cluster-Based Analysis for 5G Millimeter-Wave Cellular Systems in Dense Urban Environments

Multi-Frequency Multi-Scenario Millimeter Wave MIMO Channel Measurements and Modeling for B5G Wireless Communication Systems

In-building coverage of millimeter-wave wireless networks from channel measurement and modeling perspectives

Contact Info

Product

Resources

About