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Journal of Zhejiang University SCIENCE C 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/FITEE.2000489


Radio propagation measurement and cluster-based analysis for millimeter-wave cellular systems in dense urban environments


Author(s):  Peize ZHANG, Haiming WANG, Wei HONG

Affiliation(s):  State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China; more

Corresponding email(s):   pzzhang@seu.edu.cn, hmwang@seu.edu.cn, weihong@seu.edu.cn

Key Words:  Millimeter-wave communication, Clustering, Diffraction, Multipath channels, Propagation measurement


Peize ZHANG, Haiming WANG, Wei HONG. Radio propagation measurement and cluster-based analysis for millimeter-wave cellular systems in dense urban environments[J]. Frontiers of Information Technology & Electronic Engineering, 1998, -1(-1): .

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Abstract: 
The deployment of millimeter-wave (mmWave) cellular systems in dense urban environments with acceptable coverage and cost-efficient transmission scheme is essential for the rollout of fifth-generation (5G) and beyond technology. 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 in two identified mmWave bands of 28 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. An appropriate measure for inter- and intra-cluster characteristics is provided, which includes the cluster number, the Ricean K-factor, root-mean-squared (RMS) delay spread, RMS angular spread, and their correlations. Comparisons of these parameters across two mmWave bands for both line-of-sight (LoS) and non-LoS (NLoS) links are given. To shed light on the blockage effects, a detailed analysis of the propagation mechanisms corresponding to each NLoS cluster is provided, including reflection from exterior walls and diffraction over building corners and rooftops. Finally, the results show that the cluster-based analysis takes full advantage of mmWave beamspace channel characteristics and has further implications for the design and deployment of mmWave wireless networks.

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