Polarization properties of specular and dense multipath components in a large industrial hall

Gaillot, Davy P.; Tanghe, Emmeric; Joseph, Wout; Laly, Pierre; Hanssens, Brecht; Liénard, M.; Martens, Luc

doi:10.1109/ursigass.2014.6929362

Cited by 15 publications

(33 citation statements)

References 6 publications

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“…The mean DMC XPRs ranged from 5.2 dB to 7.7 dB, which were 4 or 5 dB lower than the SMC XPRs. The DMC XPR tends to be several dBs lower than the SMC also in the lower frequency measurements [19] [20] [21]. The mean DMC CPRs were approximately 1 dB, which were almost the same as the SMC CPRs.…”

Section: B Dmc Parameter Distributionsmentioning

confidence: 77%

“…The result showed that the power ratio of the DMC to the total received power ranged from 23 % to 38 %, and the PDP of the DMC almost followed the exponential decay distribution that is described in the RiMAX algorithm. The polarization domain characteristics of the DMC were also investigated in an industrial hall in the 1.3 GHz band [19], in a large hall in the 1.3 GHz band [20], and in urban environments in the 4.5 GHz band [21]. The results showed that the DMC had polarization dependencies.…”

Section: Introductionmentioning

confidence: 99%

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Dense Multipath Component Characteristics in 11-GHz-Band Indoor Environments

Saito

Takada

Kim

2017

IEEE Trans. Antennas Propagat.

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In the next-generation mobile communication system, the higher frequency bands from C band to V band are expected to be utilized because it has the potential to improve network capacity drastically by the available wideband spectrum. Since the characteristics of reflected and scattered radio waves from surrounding environments in those bands are thought to be quite different than at lower frequencies, the clarification of its influence on the Multiple-Input Multiple-Output (MIMO) transmission performance is a critical issue. In this paper, we focused on the characteristics of diffuse scattering in X band, and conducted the MIMO channel measurements in indoor environments in the 11 GHz band. The frequency, angular, and polarization domain Dense Multipath Component (DMC) propagation parameters were jointly estimated by using the RiMAX-based estimator. The measurement result showed the existence of significant DMC, which is thought to have originated from the floor, the ceiling as well as the walls. The angular spreads of the DMC tended to increase, and their decay factor tended to decrease as the room size decreased. It is also shown that the existence of DMC significantly affected the eigenvalue structure of the MIMO channel, which defines the MIMO transmission performance. The result is expected to be utilized for novel MIMO channel modelling in X band that includes the DMC contribution.

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Section: B Dmc Parameter Distributionsmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Dense Multipath Component Characteristics in 11-GHz-Band Indoor Environments

Saito

Takada

Kim

2017

IEEE Trans. Antennas Propagat.

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“…Similar results are reported in [ 28 ] for outdoor environments at 5.2 GHz, which found DMC power contributions ranging from 10% of the total channel power, even up to 90%. Currently, only a few more studies have been conducted regarding the influence of DMC [ 5 , 6 , 26 , 30 , 31 ]. It was shown in [ 32 , 33 ] and [ 34 ] that the DMC increases the level of the reconstructed eigenvalues, resulting in a better approximation of the measured eigenvalue structure of the MIMO channel.…”

Section: Related Workmentioning

confidence: 99%

“…In particular, the double-directional modeling of the radio channel has attracted a lot of interest because it gives a better physical insight into the wave propagation mechanisms in real environments. The effect of DMC has been investigated on the angular properties of the radio channel in [ 5 , 6 , 20 , 24 ], the polarization characteristics in [ 23 , 25 , 26 ], the clustering of multipath components in [ 1 , 27 ], and the channel capacity in [ 28 , 29 ] for outdoor and industrial scenarios, respectively.…”

Section: Introductionmentioning

confidence: 99%

An extension of the RiMAX multipath estimation algorithm for ultra-wideband channel modeling

Hanssens

Tanghe

Gaillot

et al. 2018

J Wireless Com Network

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This work presents an extension of the high-resolution RiMAX multipath estimation algorithm, enabling the analysis of frequency-dependent propagation parameters for ultra-wideband (UWB) channel modeling. Since RiMAX is a narrowband algorithm, it does not account for the frequency-dependency of the radio channel or the environment. As such, the impact of certain materials in which these systems operate can no longer be considered constant with respect to frequency, preventing an accurate estimation of multipath parameters for UWB communication. In order to track both the specular and dense multipath components (SMC and DMC) over frequency, an extension to the RiMAX algorithm was developed that can process UWB measurement data. The advantage of our approach is that geometrical propagation parameters do not appear or disappear from one sub-band onto the next. The UWB-RiMAX algorithm makes it possible to re-evaluate common radio channel parameters for DMC in the wideband scenario, and to extend the well-known deterministic propagation model comprising of SMC alone, towards a more hybrid model containing the stochastic contributions from the DMC’s distributed diffuse scattering as well.Our algorithm was tested with synthetic radio channel models in an indoor environment, which show that our algorithm can match up to 99% of the SMC parameters according to the multipath component distance (MCD) metric and that the DMC reverberation time known from the theory of room electromagnetics can be estimated on average with an error margin of less than 2 ns throughout the UWB frequency band. We also present some preliminary results in an indoor environment, which indicate a strong presence of DMC and thus diffuse scattering. The DMC power represents up to 50% of the total measured power for the lower UWB frequencies and reduces to around 30% for the higher UWB frequencies.

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“…In [11], the authors present SISO (single input single output) measurements at 5.85 GHz for communication of industrial robots in an automation cell. In [12], an analysis of the polarization characteristics of specular and dense multipath components in a large industrial hall at 1.3 GHz with 22-MHz bandwidth using RiMAX estimator are presented. Ultrawideband measurements were also performed from 3.1 to 10.6 GHz in [13] and statistical models were established.…”

Section: Introductionmentioning

confidence: 99%

Impact of Polarization Diversity in Massive MIMO for Industry 4.0

Challita¹,

Laly²,

Liénard³

et al. 2019

2019 European Conference on Networks and Communications (EuCNC)

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The massive polarimetric radio channel is evaluated in an indoor industrial scenario at 3.5 GHz using a 10×10 uniform rectangular array (URA). The analysis is based on (1) propagation characteristics like the average received power and the power to interference ratio from the Gram matrix and (2) system-oriented metrics such as sum-rate capacity with maximum-ratio transmitter (MRT). The results clearly show the impact of polarization diversity in an industrial scenario and how it can considerably improve different aspects of the system design. Results for sum-rate capacity are promising and show that the extra degree of freedom, provided by polarization diversity, can optimize the performance of a very simple precoder, the MRT.

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Polarization properties of specular and dense multipath components in a large industrial hall

Cited by 15 publications

References 6 publications

Dense Multipath Component Characteristics in 11-GHz-Band Indoor Environments

Dense Multipath Component Characteristics in 11-GHz-Band Indoor Environments

An extension of the RiMAX multipath estimation algorithm for ultra-wideband channel modeling

Impact of Polarization Diversity in Massive MIMO for Industry 4.0

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