Estimation of the scattering radius around a mobile handset using a sub-space technique

Jami, I.; Ormondroyd, R.F.

doi:10.1109/eurcom.2000.874787

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…This will need angle spread estimation algorithms. These algorithms are available throughout the literature [19], and can be utilized for an adaptive MIMO system.…”

Section: A Spatial Correlation For Various Aoa Distributionsmentioning

confidence: 99%

On the correlation analysis of antennas in adaptive MIMO systems with 3-D multipath scattering

Özdemir

Arslan

Arvas

2004

2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733)

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The performance of multiple-input multiple-output (MIMO) systems improves substantially with the adaptation techniques like power allocation and antenna selection. These algorithms can be enhanced by considering characteristics of spatial correlation. In this study, the spatial correlation in MIMO systems is investigated to fully expose the parameters affecting it. The correlation analysis is performed by taking the effect of angle-of-arrival (AoA) statistics in three-dimensional (3-D) multipath scattering, mutual coupling, and near-field scatterers (NFS). The analysis shows that a valid model of the AoA statistics is the key parameter in the correlation analysis. Mutual coupling analysis for patch antennas reveals that coupling can reduce the correlation between antenna elements. On the other hand, the analysis on NFS suggest continuous correlation estimation. Fortunately, the rate of change of NFS is much slower than the MIMO channel variation. It is concluded that the performance of MIMO systems can be improved with accurate AoA models and tracking correlation changes.

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“…This will need angle spread estimation algorithms. These algorithms are available throughout the literature [19], and can be utilized for an adaptive MIMO system.…”

Section: A Spatial Correlation For Various Aoa Distributionsmentioning

confidence: 99%

On the correlation analysis of antennas in adaptive MIMO systems with 3-D multipath scattering

Özdemir

Arslan

Arvas

2004

2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733)

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show abstract

“…The work in [24] proposes a method of estimating the SR using a linear array antenna at the receiver. Moreover, some literatures [17][18][19][20][21][22][23][24][25] also assume that the SR is known. Thus, we can obtain new interval constraints and the nonlinear inequality constraints about α i , i = 1, 3 as follows.…”

Section: Scattering Radiusmentioning

confidence: 99%

“…If the SR R s is available, the interval constraint of α i , i = 1, 2 can be further narrowed. The work in proposes a method of estimating the SR using a linear array antenna at the receiver. Moreover, some literatures also assume that the SR is known.…”

Section: The Proposed Location Techniquesmentioning

confidence: 99%

Two base station location techniques with adjusted measurements in circular scattering environments

Tan

et al. 2015

Int J Communication

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Summary In circular scattering environments, novel location techniques with only two base stations (BSs) are proposed in this paper. The proposed techniques estimate the true or line‐of‐sight ranges and angle based on non‐line‐of‐sight range and angle measurements. Three new variables are introduced when range measurements and angle measurement are available from two BSs and the serving BS, respectively. Bounds and relationships between the three variables are extracted from the geometry of the cell layout with the unknown and known scattering radius conditions, respectively. Our aim is to obtain the estimation of three new variables and then the hybrid line of position technique with the adjusted ranges, and angle is utilized to obtain the position estimation of a mobile station. In order to obtain the estimation of three new variables, a new nonlinear objective function is built to form the constrained nonlinear optimization and solved by the existing optimization algorithms. However, because of the nonconvex objective function, the optimization algorithm may converge to the local optimum and lead to bad performance. Thus, a heuristic search algorithm is proposed by averaging all the potential point. Simulation results show that the proposed techniques outperform conventional hybrid techniques. Copyright © 2015 John Wiley & Sons, Ltd.

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Single base station hybrid localization with scatter and angle of departure in circular scattering environment

Zhang

et al. 2016

Ann. Telecommun.

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Estimation of the scattering radius around a mobile handset using a sub-space technique

Cited by 5 publications

References 8 publications

On the correlation analysis of antennas in adaptive MIMO systems with 3-D multipath scattering

On the correlation analysis of antennas in adaptive MIMO systems with 3-D multipath scattering

Two base station location techniques with adjusted measurements in circular scattering environments

Single base station hybrid localization with scatter and angle of departure in circular scattering environment

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