A stochastic model of the temporal and azimuthal dispersion seen at the base station in outdoor propagation environments

被引：433

作者：

Pedersen, KI ^{[1
]}

Mogensen, PE ^{[1
]}

Fleury, BH ^{[1
]}

机构：

[1] Aalborg Univ, Ctr PersonKommunikat, DK-9220 Aalborg, Denmark

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2000年 / 49卷 / 02期

关键词：

antenna arrays; azimuth dispersion; directional channel model; propagation model;

D O I：

10.1109/25.832975

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

A simple statistical model of azimuthal and temporal dispersion in mobile radio channels is proposed. The model includes the probability density function (pdf) of the delay and azimuth of the impinging waves as well as their expected power conditioned on the delay and azimuth, The statistical properties are extracted from macrocellular measurements conducted in a variety of urban environments. It is found that in typical urban environments the power azimuth spectrum (PAS) is accurately described by a Laplacian function, while a Gaussian pdf matches the azimuth pdf, Moreover, the power delay spectrum (PDS) and the delay pdf are accurately modeled by an exponential decaying function. In bad urban environments, channel dispersion is better characterized by a multicluster model, where the PAS and PDS are modeled as a sum of Laplacian functions and exponential decaying functions, respectively.

引用

页码：437 / 447

页数：11

共 29 条

[1]

CROSS-CORRELATION BETWEEN THE ENVELOPES OF 900 MHZ SIGNALS RECEIVED AT A MOBILE RADIO BASE STATION SITE [J].