Simplified Single-Scatter Path Loss Model of LED-based Non-Line-of-Sight Ultraviolet Communications

In this work, a simplified model of single-scatter path loss (PL) for the LED-based non-line-of-sight ultraviolet communication system is proposed. For the case of narrow field-of-view of receiver, a closed-form expression of PL is derived by modeling the LED emission pattern as Lambertian distribution. The proposed PL model is compared with the exact single-scatter PL model and the Monte Carlo numerical model to verify its effectiveness and accuracy. The results indicate that the root-mean-square-error between the proposed model and the exact single-scatter model is less than 0.5dB in its application ranges.