{"title":"Channel Capacity of Differential Amplitude Pulse-Position Modulation (DAPPM) over Indoor Optical Wireless Communications","authors":"U. Sethakaset, T. Gulliver","doi":"10.1109/APCC.2006.255857","DOIUrl":null,"url":null,"abstract":"Differential amplitude pulse-position modulation (AtimesL-DAPPM) over an indoor optical wireless link can be represented as a Markov source transmitted over a finite-state machine channel. The state-transition probabilities that maximize the information rate are determined by using expectation-maximization. Then, the channel capacity of DAPPM is obtained and compared to that of pulse-position modulation (L-PPM) and differential pulse-position modulation (L-DPPM). It is shown that DAPPM achieves a higher capacity and is less sensitive to multipath dispersion than PPM and DPPM","PeriodicalId":205758,"journal":{"name":"2006 Asia-Pacific Conference on Communications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 Asia-Pacific Conference on Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APCC.2006.255857","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
Differential amplitude pulse-position modulation (AtimesL-DAPPM) over an indoor optical wireless link can be represented as a Markov source transmitted over a finite-state machine channel. The state-transition probabilities that maximize the information rate are determined by using expectation-maximization. Then, the channel capacity of DAPPM is obtained and compared to that of pulse-position modulation (L-PPM) and differential pulse-position modulation (L-DPPM). It is shown that DAPPM achieves a higher capacity and is less sensitive to multipath dispersion than PPM and DPPM