The equivalent transmission-path model-a tool for analyzing error floor characteristics due to intersymbol interference in Nakagami-Rice fading environments
The equivalent transmission-path model-a tool for analyzing error floor characteristics due to intersymbol interference in Nakagami-Rice fading environments
复制标题
等效传输路径模型——分析 Nakagami-Rice 衰落环境中码间干扰引起的误码层特性的工具
DOI：
10.1109/25.554752
复制
发表时间：
1997
影响因子：
6.8
通讯作者：
H. Iwai
中科院分区：
文献类型：
--
作者：
Y. Karasawa;T. Kuroda;H. Iwai
车载电话和户外使用的便携个人终端等陆地移动无线电系统已经有了显着的发展。然而，为了设计可靠的移动无线电系统，在各种各样的移动无线电环境中，了解电波传播特性对数字传输质量的影响是至关重要的。提出了一种计算频率选择性Nakagami-Rice衰落环境中符号间干扰引起的不可约误码率(BER)(即误码率下限)的简单而通用的方案。该方案被称为等效传输路径模型，在一般情况下起到了将波传播与数字传输特性联系起来的作用。通过假设不同类型的时延分布，我们首先确定了Nakagami-莱斯衰落的主要不可约误差的关键参数，并提出了一种利用其性质或关键参数来计算不可约误码率的简单方法。然后，我们考察了该方案在各种类型的相移键控(PSK)传输系统中的准确性。最后，基于该方案，给出了视线衰落环境下误码率地板特性的计算实例。
Land mobile radio systems such as car telephones and handy personal terminals used outdoors have enjoyed a remarkable evolution. To design reliable mobile radio systems, however, it is vital to have a good understanding of the impact of wave propagation characteristics on digital transmission quality in a wide variety of mobile radio environments. A very simple but general scheme for calculating irreducible bit error rate (BER) (namely, BER floor) due to intersymbol interference in frequency-selective Nakagami-Rice fading environments has been developed. The scheme, which we call the equivalent transmission-path model, plays a role in connecting wave propagation with digital transmission characteristics in a general manner. Through computer simulations assuming various types of delay profiles, we first identify key parameters of Nakagami-Rice fading dominating principally the occurrence of irreducible errors and we develop a simple method for the calculation of irreducible BER utilizing the nature or the key parameters. Then we examine the accuracy of the scheme for various types of phase-shift keying (PSK) transmission systems. Finally, based on the scheme, we show calculation examples of BER floor characteristics in line-of-sight fading environments.