An advanced field prediction model including diffuse scattering

被引：138
作者：
Degli-Esposti, V [1 ]
Guiducci, D
de' Marsi, A
Azzi, P
Fuschini, F
机构：
[1] Univ Bologna, Dept Elect Engn & Informat Syst, I-40126 Bologna, Italy
[2] ALSTOM Transport, I-40044 Bologna, Italy
[3] Ova G Bargellini & C SpA, I-40066 Pieve Di Cento, BQ, Italy
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2004年 / 52卷 / 07期
关键词：
land mobile radio; radio propagation; ray tracing; scattering; urban areas;
D O I：
10.1109/TAP.2004.831299
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：
Ray tracing (RT) models are now widely adopted for field prediction in urban environment. Nevertheless, conventional RT tools still suffer for excessive central processing unit (CPU) time and inaccuracy in wide-band prediction. By increasing the maximum number of successive interactions (reflections, diffractions) little improvement in wide-band results, can be usually achieved while CPU time increases exponentially. In the present paper, it is shown that by integrating reflection/diffraction with diffuse scattering, good narrow-band and wide-band results can be obtained with a low number of interactions. The adopted scattering model is a simple ray-based model, which has been embedded in a three-dimensional (3-D) RT program. The impact of diffuse scattering on narrowband and wide-band parameters is analyzed in the paper and the complete model is compared with measurements in a variety of cases, showing the validity of the approach.
引用
收藏
页码：1717 / 1728
页数：12
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