Indoor MIMO Channel Modeling by Rigorous GO/UTD-Based Ray Tracing

Loredo, S.; Rodríguez, Ángel Cervera; Torres, R.P.

doi:10.1109/tvt.2007.906362

Cited by 43 publications

(31 citation statements)

References 22 publications

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“…Using ray-tracing techniques to predict channel characteristic is effective and fast [7][8][9]. Thus, a ray-tracing channel model is used to calculate the channel matrix of the UWB system.…”

Section: Channel Modelingmentioning

confidence: 99%

Ultra-wideband outdoor communication characteristics with and without traffic

Chiu

Chen²,

Liao

et al. 2012

J Wireless Com Network

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The BER performance for ultra-wideband (UWB) outdoor communication in LOS and NLOS environments with and without traffic is investigated. We obtain the impulse responses of the UWB outdoor environment by both 2.5D SBR-Image method and inverse Fourier transform techniques. The 2.5D SBR-Image method is first considered for two-dimensional environment simulated without heights of obstacles by ray tubes. Then, heights of the obstacles are taken into consideration between the transmitters and receivers. If the height of ray is lower than that of obstacles, the ray is neglected for the receivers. This effectively reduces the simulating time. By using the impulse response of multipath channels, the BER performance for binary pulse amplitude modulation communications over the radio UWB system is evaluated. We have performed computer simulations in LOS and NLOS environments with and without traffic in dense building areas. Numerical results have shown that the multipath effect caused by moving vehicles in the outdoor LOS and NLOS environments has a great impact on BER performance. Rake receivers are used to improve the outage probability. The relationship between traffic and BER performance is investigated; meanwhile, the characteristics of LOS and NLOS outdoor UWB environments are analyzed. Our investigation results can help improve planning and design of the UWB system.

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Section: Channel Modelingmentioning

confidence: 99%

Ultra-wideband outdoor communication characteristics with and without traffic

Chiu

Chen²,

Liao

et al. 2012

J Wireless Com Network

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“…Note that the different values of dielectric constant and conductivity of materials for different frequencies are carefully considered in channel modeling. Using ray-tracing approaches to predict the channel characteristic is effective and fast, and the approaches are usually also applied to UWB [19,20] and MIMO [21,22] channel modeling in the recent years. Thus, a ray-tracing channel model is developed to calculate the wanted channel matrix of the MIMO-UWB system.…”

Section: Channel Modelingmentioning

confidence: 99%

Channel capacity of multiple‐input multiple‐output ultra‐wideband systems with single co‐channel interference

Liao

Chiu

et al. 2010

Int J Communication

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SUMMARYIn this paper, the channel capacity of multiple-input multiple-output ultra-wideband (MIMO-UWB) systems with single co-channel interference (CCI) is calculated. A ray-tracing approach is used to calculate the wanted channel frequency response, and the channel frequency response is further used to calculate the corresponding channel capacity. By the ray-tracing approach, two different antenna arrays are applied to our simulation to observe whether MIMO can reduce CCI. Also the effects caused by the two antenna arrays for the desired system and CCI are quantified.

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“…Actually, the UTD method has been previously used particularly for indoor environments (Loredo et al, 2008). Nevertheless, there has not been a rigorous model based on the UTD to study the statistics and correlation structure of MIMO channels in urban environments.…”

Section: Introductionmentioning

confidence: 99%

A New Multiple-Input–Multiple-Output Uniform Theory of Diffraction Based Channel Model for Multiple Building Diffraction in Urban Environments

et al. 2014

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This article introduces a new channel model in urban environments that considers multiple antennas in both the transmitter and receiver; moreover, the uniform theory of diffraction is used for modeling rays that impinge on buildings. Against prior models, this model calculates sub-channels of the channel matrix rigorously and does not use any random variables or distribution functions. This model can predict channel and correlation matrixes and channel capacity in a multiple-inputmultiple-output system. Furthermore, the 3GPP spatial channel measurement-based model, which is statistical, is compared with the simulation results of this study. The comparison between the two models shows that the proposed model accuracy is enough for further design of different aspects of the multiple-input-multiple-output system. Therefore, the proposed model can successfully be used to improve theoretical methods for predicting a more realistic multiple-input-multiple-output channel matrix in cellular mobile communications, where diffraction from a number of buildings has to be considered.

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Indoor MIMO Channel Modeling by Rigorous GO/UTD-Based Ray Tracing

Cited by 43 publications

References 22 publications

Ultra-wideband outdoor communication characteristics with and without traffic

Ultra-wideband outdoor communication characteristics with and without traffic

Channel capacity of multiple‐input multiple‐output ultra‐wideband systems with single co‐channel interference

A New Multiple-Input–Multiple-Output Uniform Theory of Diffraction Based Channel Model for Multiple Building Diffraction in Urban Environments

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