### Abstract

Language | English |
---|---|

Title of host publication | IEEE Wireless Communications and Networking Conference, 2008. |

Publisher | IEEE |

Pages | 769-774 |

Number of pages | 5 |

ISBN (Print) | 978-1-4244-1997-5 |

DOIs | |

Publication status | Published - Apr 2008 |

### Fingerprint

### Keywords

- Von Mises Fisher (VMF)
- azimuth co-elevation of arrival
- scatterers
- mixtures of distributions

### Cite this

*IEEE Wireless Communications and Networking Conference, 2008.*(pp. 769-774). IEEE. https://doi.org/10.1109/WCNC.2008.141

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*IEEE Wireless Communications and Networking Conference, 2008..*IEEE, pp. 769-774. https://doi.org/10.1109/WCNC.2008.141

**3-dimensional channel modeling using spherical statistics for multiple input multiple output systems.** / Mammasis, K.; Stewart, R.W.; Pfann, E.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

TY - CHAP

T1 - 3-dimensional channel modeling using spherical statistics for multiple input multiple output systems

AU - Mammasis, K.

AU - Stewart, R.W.

AU - Pfann, E.

PY - 2008/4

Y1 - 2008/4

N2 - This model is a 2D model where the propagating plane waves are assumed to arrive only from the azimuthal direction and does not include the elevation domain. As a result of this assumption the derived angle of arrival (AoA) distribution is characterized only by the azimuth direction of these waves. In this paper the distribution of scatterers is modeled in a novel 3D approach. The Von Mises Fisher (VMF) probability density function (PDF) is used to describe their distribution within the propagation environment in azimuth and coelevation. As a result the AoA distribution of the incoming multipaths is characterized in the same way. More specifically the model proposed uses a mixture of VMF distributions. A mixture can be composed of any number of clusters and this is environment/clutter specific. The parameters of the individual clusters of scatterers within the mixture are derived and an estimation of those parameters is achieved using the soft-expectation maximization (EM) algorithm. The results indicate that the proposed model fits well with MIMO experimental data obtained from a measurement campaign in Germany. The measurements obtained from the RUSK channel sounder were post-processed using the RiMAX algorithm. The data was subsequently clusterized using the soft-EM for mixtures of VMF distributions.

AB - This model is a 2D model where the propagating plane waves are assumed to arrive only from the azimuthal direction and does not include the elevation domain. As a result of this assumption the derived angle of arrival (AoA) distribution is characterized only by the azimuth direction of these waves. In this paper the distribution of scatterers is modeled in a novel 3D approach. The Von Mises Fisher (VMF) probability density function (PDF) is used to describe their distribution within the propagation environment in azimuth and coelevation. As a result the AoA distribution of the incoming multipaths is characterized in the same way. More specifically the model proposed uses a mixture of VMF distributions. A mixture can be composed of any number of clusters and this is environment/clutter specific. The parameters of the individual clusters of scatterers within the mixture are derived and an estimation of those parameters is achieved using the soft-expectation maximization (EM) algorithm. The results indicate that the proposed model fits well with MIMO experimental data obtained from a measurement campaign in Germany. The measurements obtained from the RUSK channel sounder were post-processed using the RiMAX algorithm. The data was subsequently clusterized using the soft-EM for mixtures of VMF distributions.

KW - Von Mises Fisher (VMF)

KW - azimuth co-elevation of arrival

KW - scatterers

KW - mixtures of distributions

U2 - 10.1109/WCNC.2008.141

DO - 10.1109/WCNC.2008.141

M3 - Chapter

SN - 978-1-4244-1997-5

SP - 769

EP - 774

BT - IEEE Wireless Communications and Networking Conference, 2008.

PB - IEEE

ER -