Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links

被引：0

作者：

Zhang, Xiaoyu ^{[1
,2
]}

Singh, Ravinder ^{[3
,4
]}

Farmer, James ^{[3
]}

Faulkner, Grahame ^{[3
]}

O'brien, Dominic ^{[3
]}

Petropoulos, Periklis ^{[2
]}

Hanzo, Lajos ^{[1
]}

机构：

[1] Univ Southampton, Sch Elect & Comp Sci, Southampton SO17 1BJ, Hants, England

[2] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

[3] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

[4] Toshiba Europe Ltd, Cambridge Res Lab, Cambridge CB4 0GZ, England

来源：

IEEE ACCESS | 2021年 / 9卷

基金：

欧盟地平线“2020”; 英国工程与自然科学研究理事会; 欧洲研究理事会;

关键词：

Optical wireless communications; fiber-wireless-fiber; forward error correction; link misalignment; beam-steering; tracking; dynamic range; LOCALIZATION; DESIGN;

D O I：

10.1109/ACCESS.2021.3103317

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Fiber-wireless-Fiber links require alignment between the transmitter and receiver to a high degree of precision (typically similar to 0.01 degrees for a link of a few meters), and channel coding can be used for mitigating the link margin reduction caused by the limited precision of the beam-steering and tracking system. This paper reports results from an experimental study of the misalignment tolerance attained by channel coding. Explicitly, the received power penalties imposed by misalignment are characterized, and then forward error correction techniques are adopted for mitigating the performance degradation inflicted, which is quantified experimentally. Our results characterize trade-offs between coding rate, decoding complexity and the degree of misalignment. Overall, an improvement of the tolerance to misalignment up to similar to 50% was attained for coded links compared with the uncoded counterpart.

引用

页码：112726 / 112732

页数：7