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Femtocell power control by discrimination of indoor and outdoor users 通过室内和室外用户的区分来控制飞蜂窝的功率
2011 Wireless Telecommunications Symposium (WTS) Pub Date : 2011-04-13 DOI: 10.1109/WTS.2011.5960834
Kyong-Tak Cho, Junsik Kim, Gwangil Jeon, B. Ryu, N. Park
{"title":"Femtocell power control by discrimination of indoor and outdoor users","authors":"Kyong-Tak Cho, Junsik Kim, Gwangil Jeon, B. Ryu, N. Park","doi":"10.1109/WTS.2011.5960834","DOIUrl":"https://doi.org/10.1109/WTS.2011.5960834","url":null,"abstract":"Femtocells are usually deployed in an indoor environment to provide in-building coverage enhancements. However, femtocells get to provide services for not only indoor users but also outdoor users in vicinity. Without the knowledge from the femtocell of whether the serviced users are located indoor or outdoor, the outdoor users are likely to experience low Quality of Service (QoS) due to inefficient coverage management and power control from the femtocells. To resolve such problem, this paper provides a method of discriminating indoor and outdoor users in a simplified way. Also, based on such discrimination, a downlink power control scheme is provided. Through simulations, we show that the discrimination procedure achieves 97.48% of correct determination in environment with low shadowing effect, and 89.41% of correct determination with high shadowing effects. Also based on the proposed discrimination procedure, power control exploiting such information provides a 31.96% reduction of outage probability, and a 8dB performance gain for cell-edge HUEs, compared to a power control with random discrimination.","PeriodicalId":307560,"journal":{"name":"2011 Wireless Telecommunications Symposium (WTS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121707203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Generic approach for hierarchical modulation performance analysis: Application to DVB-SH 分层调制性能分析的通用方法:在DVB-SH中的应用
2011 Wireless Telecommunications Symposium (WTS) Pub Date : 2011-03-07 DOI: 10.1109/WTS.2011.5960857
H. Méric, J. Lacan, Caroline Amiot-Bazile, F. Arnal, M. Boucheret
{"title":"Generic approach for hierarchical modulation performance analysis: Application to DVB-SH","authors":"H. Méric, J. Lacan, Caroline Amiot-Bazile, F. Arnal, M. Boucheret","doi":"10.1109/WTS.2011.5960857","DOIUrl":"https://doi.org/10.1109/WTS.2011.5960857","url":null,"abstract":"Broadcasting systems have to deal with channel diversity in order to offer the best rate to the users. Hierarchical modulation is a practical solution to provide several rates in function of the channel quality. Unfortunately the performance evaluation of such modulations requires time consuming simulations. We propose in this paper a novel approach based on the channel capacity to avoid these simulations. The method allows to study the performance in terms of spectrum efficiency of hierarchical and also classical modulations combined with error correcting codes. Our method will be applied to the DVB-SH standard which considers hierarchical modulation as an optional feature.","PeriodicalId":307560,"journal":{"name":"2011 Wireless Telecommunications Symposium (WTS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125002029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
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