Empirical Stochastic Modeling of Multipath Polarizations in Indoor Propagation Scenarios

Yin, Xuefeng; He, Yongyu; Cen, Ling; Tian, Li; Cheng, Xiang

doi:10.1109/tap.2015.2486798

Cited by 12 publications

(5 citation statements)

References 27 publications

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“…where α ,p RX ,p TX with p RX , p TX ∈ {θ, φ} represents the complex amplitude by the signal transmitted with specific Tx polarization and Rx polarization for the th path [30]. It is also worth mentioning that being a unit vector can be written as = e(θ, φ) = [sinθ • cosφ sinθ • sinφ cosθ], where θ,φ denotes the elevation and the azimuth respectively.…”

Section: Channel Characterization a Generic Channel Modelmentioning

confidence: 99%

Measurement-Based Characterization of 39 GHz Millimeter-Wave Dual-Polarized Channel Under Foliage Loss Impact

Yin

Zhang

et al. 2019

IEEE Access

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This paper presents a measurement-based analysis of wideband 39 GHz millimeter wave (mm-wave) dual-polarized propagation channel under the impact of foliage presence between a transmitter (Tx) and a receiver (Rx). The measurements were conducted in a rich-vegetation area, and the so-called direction-scan-sounding (DSS) method which rotates a horn antenna in angular domains was applied, aiming at investigating the direction-of-arrival (DoA)-dependent characteristics of polarimetric channels. Four Tx-to-Rx polarization configurations were considered, including co-polarization scenarios with vertical Tx-polarization to vertical Rx-polarization (VV) and horizontal to horizontal (HH), as well as crosspolarization with vertical to horizontal (VH) and horizontal to vertical (HV), which allow scrutinizing the differences in delay-direction dispersion for usually-encountered scenarios. A foliage loss model for various vegetation depths in VV polarization configuration, was also presented in this paper. The results show that the foliage-loss DoA spectra for VH and HV are similar, while the spectra exhibit less penetration loss in most directions for VV than for the HH. Furthermore, the presence of vegetation between the Tx and the Rx leads to larger dispersion in delay compared to the clear line-of-sight (LoS) scenario, particularly for vertical polarization in the Tx side, and additionally, the foliage presence also results in evident DoA dispersion, specially in the HV scenario. Selectivity in directions caused by foliage is more significant in verticallypolarized Tx scenarios than in the horizontally-polarized Tx scenarios. A statistical model is established summarizing these comparison details.

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Section: Channel Characterization a Generic Channel Modelmentioning

confidence: 99%

Measurement-Based Characterization of 39 GHz Millimeter-Wave Dual-Polarized Channel Under Foliage Loss Impact

Yin

Zhang

et al. 2019

IEEE Access

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“…Each transmitter communicates with its corresponding receiver with the aid of all relays. Based on the measurement analysis in [10], the polarization distribution of a MIMO channel is described as a full-space distribution, and the polarization matrix of a multipath component (MPC) is given by Eq. (1) for the l -th path of MPCs.…”

Section: Polarized Mimo Multi-hop Relay Channel Modelingmentioning

confidence: 99%

“…Without increasing the scale of the antenna array in MIMO antenna systems, polarization in different orientations can be used as a new resource to increase the number of uncorrelated channels [7] [8]. And polarization can perform better on the transmission performance of the channel [9] [10]. The polarization characteristics determine the effectiveness, diversity, or severity of polarization mismatch of polarization multiplexing [11] [12].…”

Section: Introductionmentioning

confidence: 99%

Polarization optimization of MIMO polarized multi-hop relay channels network in urban environment at 2.6GHz

Xiong

Yang

Cheng

et al. 2023

Third International Conference on Digital Signal and Computer Communications (DSCC 2023)

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Relay technology plays an important role in wireless communication as an effective method to improve network coverage and communication quality. Polarization is an important characteristic of electromagnetic waves. Single-user MIMO multi-hop relay channels show significant polarization selection characteristics, which have a huge impact on the transmission quality of MIMO relay channels. This paper analyzes the channel capacity of a point-to-point single-user polarized MIMO multi-hop relay network and reveals the polarization dependency of adjacent hop channels and multipath propagation links. For a single-user polarized MIMO relay channel network constructed based on the COST 2100 channel model, a hybrid algorithm based on adaptive simulated annealing particle swarm optimization (BSAPSO) is proposed to optimize the polarization configuration of the antenna array, thereby improving the channel capacity of this relay network. The performance simulation results show that the BSAPSO can improve the link capacity of the polarized MIMO multi-hop relay network significantly compared with the other three groups of polarization selection optimization algorithms.

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“…In general, when the waves reflect, scatter, or diffract they lose power, the polarization ellipse turns, eccentricity changes and the phase difference between polarization components change, converting the polarization from linear to elliptical. Models for the depolarization effects have been developed in [18], [19]. It should be noted that XPR only describes the power ratio between orthogonal polarizations and does not indicate the phase difference between the orthogonal components or the handedness of the elliptical polarization.…”

Section: Depolarization and Channel Polarization Modelingmentioning

confidence: 99%

Modeling the Multipath Cross-Polarization Ratio for 5–80-GHz Radio Links

Karttunen

Järveläinen

Nguyen

et al. 2019

IEEE Trans. Wireless Commun.

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In this paper, we parameterize an excess loss-based multipath component (MPC) cross-polarization ratio (XPR) model in indoor and outdoor environments for above-6 GHz frequency bands. The results are based on 28 measurement campaigns in several frequency bands ranging from 15 to 80 GHz. A conventional XPR model of an MPC assuming a constant mean value fits our measurements very poorly and moreover overestimates the depolarization effect. Our measurements revealed a clear trend that the MPC XPR is inversely proportional to an excess loss in reference to the free-space path loss. The model is physically sound as a higher excess loss is attributed to more lossy interactions or to a greater number of interactions with objects, leading to a greater chance of depolarization. The measurements furthermore showed that the MPC XPR is not strongly frequency or environment dependent. In our MPC XPR model, an MPC with zero-dB excess loss has a mean XPR of 28 dB. The mean XPR decreases half-a-dB as the excess loss increases by every dB and the standard deviation around the mean is 6 dB.The model is applicable to existing channel models to reproduce realistic MPC XPRs for the above 6-GHz radio links.

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Empirical Stochastic Modeling of Multipath Polarizations in Indoor Propagation Scenarios

Cited by 12 publications

References 27 publications

Measurement-Based Characterization of 39 GHz Millimeter-Wave Dual-Polarized Channel Under Foliage Loss Impact

Measurement-Based Characterization of 39 GHz Millimeter-Wave Dual-Polarized Channel Under Foliage Loss Impact

Polarization optimization of MIMO polarized multi-hop relay channels network in urban environment at 2.6GHz

Modeling the Multipath Cross-Polarization Ratio for 5–80-GHz Radio Links

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