{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T14:14:45Z","timestamp":1758636885807,"version":"3.37.3"},"reference-count":17,"publisher":"Wiley","license":[{"start":{"date-parts":[[2018,1,1]],"date-time":"2018-01-01T00:00:00Z","timestamp":1514764800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Computer Networks and Communications"],"published-print":{"date-parts":[[2018]]},"abstract":"<jats:p>In intensity modulation\/direct detection- (IM\/DD-) based optical OFDM systems, the requirement of the input signal to be real and positive unipolar imposes a reduction of system performances. Among previously proposed unipolar optical OFDM schemes for optical wireless communications (OWC), asymmetrically clipped optical OFDM (ACO-OFDM) and direct current biased optical OFDM (DCO-OFDM) are the most accepted ones. But those proposed schemes experience either spectral efficiency loss or energy efficiency loss which is a big challenge to realize high speed OWC. To improve the spectral and energy efficiencies, we previously proposed a multistratum-based stratified asymmetrically clipped optical OFDM (STACO-OFDM), and its performance was analyzed for AWGN channel. STACO-OFDM utilizes even subcarriers on the first stratum and odd subcarriers on the rest of strata to transmit multiple ACO-OFDM frames simultaneously. STACO-OFDM provides equal spectral efficiency as DCO-OFDM and better spectral efficiency compared to ACO-OFDM. In this paper, we analyze the BER performance of STACO-OFDM under the effect of multipath fading. The theoretical bit error rate (BER) bound is derived and compared with the simulation results, and good agreement is achieved. Moreover, STACO-OFDM shows better BER performance compared to ACO-OFDM and DCO-OFDM.<\/jats:p>","DOI":"10.1155\/2018\/9575281","type":"journal-article","created":{"date-parts":[[2018,4,1]],"date-time":"2018-04-01T23:34:30Z","timestamp":1522625670000},"page":"1-14","source":"Crossref","is-referenced-by-count":5,"title":["BER Performance of Stratified ACO-OFDM for Optical Wireless Communications over Multipath Channel"],"prefix":"10.1155","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6096-3333","authenticated-orcid":true,"given":"Zelalem Hailu","family":"Gebeyehu","sequence":"first","affiliation":[{"name":"Institute of Science, Technology and Innovation, Pan African University, Nairobi, Kenya"}]},{"given":"Philip Kibet","family":"Langat","sequence":"additional","affiliation":[{"name":"Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya"}]},{"given":"Ciira Wa","family":"Maina","sequence":"additional","affiliation":[{"name":"Dedan Kimathi University of Technology, Nyeri, Kenya"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1109\/5.554222"},{"year":"2000","key":"3"},{"key":"4","first-page":"74","volume":"41","year":"2003","journal-title":"IEEE Communications Magazine"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1049\/ip-opt:20045065"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1109\/lcomm.2008.080193"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1109\/jlt.2008.2010061"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1049\/el:20063636"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1109\/tcomm.2012.082712.110812"},{"issue":"5","key":"10","first-page":"261","volume":"12","year":"2017","journal-title":"Journal of Communications"},{"issue":"9","key":"11","doi-asserted-by":"crossref","first-page":"1758","DOI":"10.1109\/JSAC.2015.2432530","volume":"33","year":"2015","journal-title":"IEEE Journal on Selected Areas in Communications"},{"issue":"1","key":"12","doi-asserted-by":"crossref","first-page":"1","DOI":"10.37936\/ecti-eec.2016141.171081","volume":"14","year":"2015","journal-title":"ECTI Transactions on Electrical Engineering, Electronics, and Communications"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1109\/twc.2009.080524"},{"key":"15","doi-asserted-by":"publisher","DOI":"10.1109\/tcomm.2012.020612.090300"},{"first-page":"285","volume-title":"OFDM Communications over time-varying channels","year":"2011","key":"17"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.1109\/tcomm.2002.806518"},{"key":"19","doi-asserted-by":"publisher","DOI":"10.1109\/jlt.2013.2286746"},{"year":"2006","key":"22"}],"container-title":["Journal of Computer Networks and Communications"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/jcnc\/2018\/9575281.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/jcnc\/2018\/9575281.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/jcnc\/2018\/9575281.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,8,17]],"date-time":"2022-08-17T18:05:19Z","timestamp":1660759519000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.hindawi.com\/journals\/jcnc\/2018\/9575281\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018]]},"references-count":17,"alternative-id":["9575281","9575281"],"URL":"https:\/\/doi.org\/10.1155\/2018\/9575281","relation":{},"ISSN":["2090-7141","2090-715X"],"issn-type":[{"type":"print","value":"2090-7141"},{"type":"electronic","value":"2090-715X"}],"subject":[],"published":{"date-parts":[[2018]]}}}