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1998 International Conference on Communication Technology

作者： Gao Xing Huang Ya-Ru Inner Mongolia University

ISBN: (纸本)7800908275

＜正＞The impulse response of an indoor channel varies with different environments and spatial positions of a transceiver pair as a function of the phase relationship among individual multipath components that have variety of time *** factor results in various fading especially in a chip duration of the Direct Sequence Code Division Multiple（DS-CDMA） *** solve this problem,a Modified Wiener Beamforming（MWB） has been proposed to co-phase the multipath components and then combine them by maximum ratio combining in a chip duration We derive formulas for MWB with a method to separate and estimate multipath vectors through each *** purpose is to isolate and recombine multipath components before they are added together as a phasor to produce ***,the fading of Rayleigh or Rice distributed multipath in a chip duration can be reduced to a *** results are presented by using a three-dimension ray tracing to support the proposed method.

关键词： array signal processing spread spectrum communication code division multiple access multiuser channels multipath channels Rician channels Rayleigh channels indoor radio ray tracing transient response direction-of-arrival estimation modified Wiener beamforming indoor channel improvement impulse response indoor channel spatial positions transceiver pair phase relationship multipath components time delays chip duration direct sequence code division multiple access DS-CDMA system maximum ratio combining multipath vectors Rice distributed multipath Rayleigh distributed multipath simulation results 3D ray tracing antenna array

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A Hybrid indoor MIMO channel Model Using Signal Clusters for Wireless Communication

A Hybrid Indoor MIMO Channel Model Using Signal Clusters for...

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IEEE第14届国际个人无线移动通信大会

作者： Ananda S.Mohan Microwave and Wireless Technology Research GroupFaculty of Engineering University of Technology Sydney SydneyAustralia

Both Ray tracing and practical measurements have confirmed existence of clustering of signals during propagation in an indoor environment. In this paper we propose a hybrid MIMO channel model that

关键词： RF propagation Smart Antenna indoor channel Clustering.

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A 3-D Hybrid Dynamic channel Model for indoor THz Communications

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China Communications 2021年第5期18卷 50-65页

作者： Yan Zhang Lei Zhao Zunwen He School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China

To meet the demands for the explosive growth of mobile data rates and scarcity of spectrum resources in the near future,the terahertz(THz)band has widely been regarded as a key enabler for the upcoming beyond fifth-generation(B5G)wireless *** accurate THz channel model is crucial for the design and deployment of the THz wireless communication *** this paper,a three-dimensional(3-D)dynamic indoor THz channel model is proposed by means of combining deterministic and stochastic modeling *** are randomly distributed in the indoor environment and each ray is characterized with consideration of molecular absorption and diffuse ***,we present the dynamic generation procedure of the channel impulse responses(CIRs).Statistical properties are investigated to indicate the non-stationarity and feasibility of the proposed ***,by comparing with delay spread and K-factor results from the measurements,the utility of the proposed channel model is verified.

关键词： terahertz(THz)communications indoor channel molecular absorption diffuse scattering non-stationarity

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