{"title":"A free space optical communications system: An M-ary multi-pulse width Modulation scheme with emphasis on optimizing transmit power","authors":"E. Kozachenko, Matthew E. Anderson","doi":"10.1109/ICSOS.2011.5783666","DOIUrl":null,"url":null,"abstract":"This effort investigates the development of a point-to-point, asynchronous pulse-mode communication system via a unidirectional, terrestrial free space optics link, utilizing a tunable, mid-IR Quantum Cascade Laser (QCL), courtesy of Daylight Solutions, Inc. In the current demonstration and simulations, this pulse communication scheme harnesses the availability of 24 unique pulse widths to achieve a variable bit rate, limited from 9.4 to 50 Mbps throughput. In comparison, continuous-wave (CW) communication systems can achieve relatively faster data rates, yet come at a price of high power consumption, not favorable for general power efficiency or mobile applications. The respective digital-to-digital encoding, multiple pulse-width modulation has the potential to provide a substantial transmit power savings conducive for longer battery lifetimes of a mobile system, while maintaining data throughput on the order of Mbps, and can render excellent BER performance.","PeriodicalId":107082,"journal":{"name":"2011 International Conference on Space Optical Systems and Applications (ICSOS)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Conference on Space Optical Systems and Applications (ICSOS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSOS.2011.5783666","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
This effort investigates the development of a point-to-point, asynchronous pulse-mode communication system via a unidirectional, terrestrial free space optics link, utilizing a tunable, mid-IR Quantum Cascade Laser (QCL), courtesy of Daylight Solutions, Inc. In the current demonstration and simulations, this pulse communication scheme harnesses the availability of 24 unique pulse widths to achieve a variable bit rate, limited from 9.4 to 50 Mbps throughput. In comparison, continuous-wave (CW) communication systems can achieve relatively faster data rates, yet come at a price of high power consumption, not favorable for general power efficiency or mobile applications. The respective digital-to-digital encoding, multiple pulse-width modulation has the potential to provide a substantial transmit power savings conducive for longer battery lifetimes of a mobile system, while maintaining data throughput on the order of Mbps, and can render excellent BER performance.