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## Evaluation of Doppler-Delay Properties of Diffuse Components in Vehicular Propagation Channels

Citations: | 2 - 1 self |

### Citations

705 |
ESPRIT-estimation of signal parameters via rotational invariance techniques,”
- Roy, Kailath
- 1989
(Show Context)
Citation Context ...catterers, and the diffuse components contributed by diffuse scatterers. For the discrete components contributed by individual specular paths, the high resolution algorithms, e.g. SAGE [3] and ESPRIT =-=[4]-=-, can be used to estimate the parameters of the paths. Based on the estimation results, stochastic channel models, such as the WINNER models [5] are constructed. However, due to the tremendous amount ... |

121 | Channel parameter estimation in mobile radio environments using the sage algorithm - Fleury, Tschudin, et al. - 1999 |

100 |
The double-directional radio channel
- Steinbauer, Molisch, et al.
- 2001
(Show Context)
Citation Context ...ces we call these components as the LOS, SD, MD and DI components in the sequel. For high-resolution parameter estimation of the LOS, SD and MD components, the generic specular path model can be used =-=[12]-=-, [3], [13]. The local spreads of these components can be estimated by using the clustering methods [14] or the SAGE-based estimator for the power spectrum of the components [8]. Unfortunately, these ... |

54 |
Estimation of radio channel parameters: models and algorithms
- Richter
- 2005
(Show Context)
Citation Context ...g. 2 (a), we observe that the power delay spectrum of the simulated DI component exhibits exponential decay, which is similar with the power delay profile of the dense multipath component obtained in =-=[15]-=-. The asymmetric power Doppler frequency spectrum shown in Fig. 2 (b) is similar with the Doppler frequency spectrum derived in [16] for a time-variant scenario where the scatterers are distributed ac... |

41 | geometry-based stochastic MIMO model for vehicle-to-vehicle communications
- Karedal, Tufvesson, et al.
- 2009
(Show Context)
Citation Context ...and performance optimization of vehicular communication systems. Experimental characteristics of V2V propagation channel were surveyed in [1], and some modeling approaches were summarized as well. In =-=[2]-=-, a geometry-based stochastic model was proposed for V2V channels based on the empirical evidence of the contributions of the vehicular channel responses, which consist of the line-of-sight (LOS) comp... |

32 | The effects of local scattering on direction of arrival estimation with MUSIC
- Astély, Ottersten
- 1999
(Show Context)
Citation Context ...ibe the characteristics of diffuse components. We need to find out the physical properties of the diffuse scattering in order to characterize the diffuse components and construct realistic models. In =-=[6]-=-, it was observed that the diffuse scattering can contribute more to the capacity of MIMO (MultipleInput Multiple Ouput) channel than the discrete well-separated paths. Thus, the diffuse component in ... |

32 |
Smoothing periodograms from time series with contagious spectra
- Bartlett
- 1948
(Show Context)
Citation Context ...ct the LOS, SD and MD components and subtract from the observation. The power spectrum ˆp(τ, ν) of the residual signals is calculated based on S = 20 segments using the Bartlett beamforming technique =-=[20]-=-, i.e. ˆp(τ, ν) = 1 SNI S∑ fN∑ s=1 f=fn t=ti tI∑ |ˆys(t, f)exp{−j2πνt} exp{−j2πfnτ}| 2 Fig. 6 depicts the ˆp(τ, ν) for the DI component using the data collected when the Tx and Rx were approaching eac... |

28 | Cluster characteristics in a MIMO indoor propagation environment
- Czink, Yin, et al.
- 2007
(Show Context)
Citation Context ...ameter estimation of the LOS, SD and MD components, the generic specular path model can be used [12], [3], [13]. The local spreads of these components can be estimated by using the clustering methods =-=[14]-=- or the SAGE-based estimator for the power spectrum of the components [8]. Unfortunately, these methods are inappropriate to handle the DI components. In the following, the mechanism for generating th... |

16 |
Modeling the Channel Time-Variance for Fixed Wireless
- Thoen
- 2002
(Show Context)
Citation Context ...oppler frequency; (d) Delay-Doppler frequency power spectrum. the scenario i, the simulated Doppler frequency spectrum is symmetric, which is consistent with the Doppler frequency spectrum derived in =-=[17]-=- for the case where the transmitter and receiver are fixed and all of the scatterers move. Notice that this case is identical with the situation where the transmitter and receiver are moving in parall... |

16 | Mecklenbräuker, “Characterization of vehicleto-vehicle radio channels from measurements at 5.2 GHz
- Paier, Karedal, et al.
- 2009
(Show Context)
Citation Context ... vicinity of the highway. Furthermore, trees, bushes and grasses are confined in the diffuse zone along the highway. Table I lists the configuration parameters of the sounder. Readers are referred to =-=[19]-=- for a detailed description of the sounder. We derived a high-resolution estimator for the parameters of specular paths using the SAGE algorithm. This estimator is applied to extract the delays, Doppl... |

12 | Detection and tracking of MIMO propagation path parameters using state-space approach
- Salmi, Richter, et al.
- 2009
(Show Context)
Citation Context ... in the spatial and delay domain are characterized by series of von-Mises Fisher probability density functions in [8], [9]. The spatial-temporal properties of diffuse components are also addressed in =-=[10]-=-. The results reported in these references provide more insights for characterization of diffuse components. However, these results focus on the expression of the diffuse components in the path-parame... |

9 | Propagation aspects of vehicle-to-vehicle communications: an overview
- Molisch, Tufvesson, et al.
- 2009
(Show Context)
Citation Context ...tic models of propagation channels are crucial for the design and performance optimization of vehicular communication systems. Experimental characteristics of V2V propagation channel were surveyed in =-=[1]-=-, and some modeling approaches were summarized as well. In [2], a geometry-based stochastic model was proposed for V2V channels based on the empirical evidence of the contributions of the vehicular ch... |

8 | Distributed scattering in radio channels and its contribution to MIMO channel capacity
- Richter, Salmi, et al.
- 2006
(Show Context)
Citation Context ... in the channel response should not be neglected. It is necessary to characterize the physical properties for the diffuse components such that the channel response can be described more precisely. In =-=[7]-=-, the power-delay profile of the diffuse component, i.e. the so-called multi-path component, is modeled as an exponential decay function. While the power spectrum of diffuse components in the spatial ... |

8 |
Polarization estimation of individual propagation paths using the SAGE algorithm
- Yin, Fleury, et al.
- 2003
(Show Context)
Citation Context ... these components as the LOS, SD, MD and DI components in the sequel. For high-resolution parameter estimation of the LOS, SD and MD components, the generic specular path model can be used [12], [3], =-=[13]-=-. The local spreads of these components can be estimated by using the clustering methods [14] or the SAGE-based estimator for the power spectrum of the components [8]. Unfortunately, these methods are... |

2 |
Impact of the propagation conditions on the properties of MIMO channels
- Fleury, Yin, et al.
(Show Context)
Citation Context ...rum is symmetric with respect to the point with 0 ◦ -AoA and 0 ◦ -AoD. This shape is also similar with the simulated bidirection power spectrum of a synthetic microcellular environment illustrated in =-=[18]-=-. However, because we only consider one-bounce paths induced by the scatterers confined within two rectangular areas, the obtained bi-azimuth power spectrum in Fig. 4 appears much narrower than that d... |

1 |
A sage algorithm for estimation of the direction power spectrum of individual path components
- Yin, Liu, et al.
- 2007
(Show Context)
Citation Context ... as an exponential decay function. While the power spectrum of diffuse components in the spatial and delay domain are characterized by series of von-Mises Fisher probability density functions in [8], =-=[9]-=-. The spatial-temporal properties of diffuse components are also addressed in [10]. The results reported in these references provide more insights for characterization of diffuse components. However, ... |

1 |
Propagation characteristics at
- Medbo, Hallenberg, et al.
(Show Context)
Citation Context ...ch is particularly significant in vehicular channels. Experimental results shown in [2] indicate a specific Doppler frequency-delay profile of the diffuse components from V2V channel measurements. In =-=[11]-=-, the power spectra obtained using ray-tracing techniques are compared with those observed in real measurements. It is shown that the ray-tracing techniques at present cannot be used to reproduce corr... |

1 |
Non-fixed scatterers and their effects on mimo multicarrier fading communication channels
- Rad, Gazor, et al.
(Show Context)
Citation Context ...he power delay profile of the dense multipath component obtained in [15]. The asymmetric power Doppler frequency spectrum shown in Fig. 2 (b) is similar with the Doppler frequency spectrum derived in =-=[16]-=- for a time-variant scenario where the scatterers are distributed according to a Laplace or Normal distribution around the Tx and the Rx. This is actually true for the simulated scenario where the sca... |