论文标题
具有独立镜面组件的波动的两射线褪色模型
The Fluctuating Two-Ray Fading Model with Independent Specular Components
论文作者
论文摘要
我们介绍并表征独立的两射线（IFTR）褪色模型，这是一类褪色模型，该模型由两个独立波动的两个镜面组成，再加上建模为复杂的高斯随机变量的扩散组件。 IFTR模型补充了流行的波动两射线（FTR）模型，该模型在该模型上完全相关并共同波动。接收的SNR在IFTR褪色（包括PDF，CDF和MGF）中的主要概率函数以封闭形式表示，其功能形式与其他最先进的褪色模型相似。然后，使用在相当多的方案中测得的多个通道（包括视线（LOS）毫米波，陆地移动卫星（LMS）和水下声学通信（UAC））对IFTR模型进行经验验证，显示出比原始FTR模型和以前在这些环境中使用的其他模型更好的拟合度。此外，在两种情况下，以封闭形式评估了在IFTR褪色下运行的无线通信系统的性能：（i）相干调制的家族的精确和渐近位错误率； （ii）精确的和渐近的中断概率。
We introduce and characterize the independent fluctuating two-ray (IFTR) fading model, a class of fading models consisting of two specular components which fluctuate independently, plus a diffuse component modeled as a complex Gaussian random variable. The IFTR model complements the popular fluctuating two-ray (FTR) model, on which the specular components are fully correlated and fluctuate jointly. The chief probability functions of the received SNR in IFTR fading, including the PDF, CDF and MGF, are expressed in closed-form, having a functional form similar to other state-of-the-art fading models. Then, the IFTR model is empirically validated using multiple channels measured in rather diverse scenarios, including line of sight (LOS) millimeter-wave, land mobile satellite (LMS) and underwater acoustic communication (UAC), showing a better fit than the original FTR model and other models previously used in these environments. Additionally, the performance of wireless communication systems operating under IFTR fading is evaluated in closed-form in two scenarios: (i) exact and asymptotic bit error rate for a family of coherent modulations; and (ii) exact and asymptotic outage probability.
