Analysis of the Level-Crossing Rate and Average Duration of Fades of WSSUS Channels

被引：0
|
作者：
Patzold, Matthias [1 ]
Hajri, Nazih [2 ]
Youssef, Neji [2 ]
机构：
[1] Univ Agder, Fac Sci & Engn, NO-4898 Grimstad, Norway
[2] Univ Carthage, Ecole Super Commun Tunis, Tunis 2083, Tunisia
来源：
2017 11TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) | 2017年
关键词：
MOBILE FADING CHANNELS; 2ND-ORDER STATISTICS; SYSTEMS;
D O I：
暂无
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 ; 0809 ;
摘要：
Studies of the level-crossing rate (LCR) and the average duration of fades (ADF) are so far only devoted to stochastic processes being a function of one independent variable, which is usually time or in some few cases frequency. In this paper, we study the LCR (ADF) of wide-sense stationary uncorrelated scattering (WSSUS) processes in the time-frequency domain. A closed-form solution will be derived for the so-called time-frequency LCR (ADF) of the absolute value of the time-variant transfer function (TVTF) of WSSUS processes. It is shown that the LCR (ADF) is circularly symmetric in the normalized time-frequency domain. The derived time-frequency LCR contains the time LCR and frequency LCR well known in the literature as special cases. The importance of the introduced time-frequency LCR is demonstrated by introducing a new method for the estimation of the Doppler spread and the delay spread from measured TVTFs of WSSUS channels.
引用
收藏
页码：1594 / 1598
页数：5
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