{"title":"Performance enhancement of an MB/spl I.bar/OFDM based UWB system in multiple SOPs environments","authors":"Peng Gong, Peng Xue, Jae Sung Lee, D. Kim","doi":"10.1109/ISWPC.2006.1613569","DOIUrl":null,"url":null,"abstract":"In this paper, we propose a new transmission scheme to support multiple simultaneously operating piconets (SOPs) in an ultra wideband (UWB) system based on multi-band orthogonal frequency division multiplexing (MB/spl I.bar/OFDM), where the code division technique is combined with the MB/spl I.bar/OFDM. When there are 2 or 3 SOPs, the collision between different piconets is increased and the average probabilities of symbol collision increase up to nearly 55.7% and 70.7%, respectively. Hence, the previous scheme using symbol repeater and erasure can't effectively reduce the co-channel interference (CCI). We propose to use the MC/spl I.bar/CDMA to mitigate the CCI from 2 and 3 SOPs. Our simulation results demonstrate that the proposed scheme is effective in multiple SOPs.","PeriodicalId":145728,"journal":{"name":"2006 1st International Symposium on Wireless Pervasive Computing","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2006-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 1st International Symposium on Wireless Pervasive Computing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISWPC.2006.1613569","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
In this paper, we propose a new transmission scheme to support multiple simultaneously operating piconets (SOPs) in an ultra wideband (UWB) system based on multi-band orthogonal frequency division multiplexing (MB/spl I.bar/OFDM), where the code division technique is combined with the MB/spl I.bar/OFDM. When there are 2 or 3 SOPs, the collision between different piconets is increased and the average probabilities of symbol collision increase up to nearly 55.7% and 70.7%, respectively. Hence, the previous scheme using symbol repeater and erasure can't effectively reduce the co-channel interference (CCI). We propose to use the MC/spl I.bar/CDMA to mitigate the CCI from 2 and 3 SOPs. Our simulation results demonstrate that the proposed scheme is effective in multiple SOPs.