Open AccessAnalytical link bandwidth model based square array reception for non-line-of-sight ultraviolet communication
Author(s) -
Heng Qin,
Yong Zuo,
Feiyu Li,
Risheng Cong,
Lingchao Meng,
Jian Wu
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.022693
Subject(s) - non line of sight propagation , bandwidth (computing) , computer science , optics , monte carlo method , transmitter , channel (broadcasting) , coherence bandwidth , transceiver , physics , electronic engineering , telecommunications , delay spread , wireless , mathematics , engineering , fading , statistics
An analytical model is presented firstly in this paper to formulate the link bandwidth of non-line-of-sight (NLOS) ultraviolet (UV) channel. The link bandwidth is characterized by three geometrical parameters including transmitter (Tx) elevation angle, receiver (Rx) field of view (FOV), and transceiver separation distance, and further expressed as a closed-form through software-aided numerical fitting. Comparison with the link bandwidth obtained via a Monte Carlo model is done to verify the feasibility of this model. Based on this model, we investigate the diversity reception on the NLOS UV communication from a new perspective. A spatially squared distributed Rx array is customized for the NLOS UV channel. Lower temporal broadening is enabled, leading to a higher link bandwidth. Numerical results suggest that over 100% improvement of the link bandwidth is predicted by the square array reception and the ratio grows rapidly with the narrowing of Tx beam divergence. Therefore, this paper provides a guide for link analysis and receiver design for NLOS UV communication.