{"title":"Impact of efficient power amplifiers in wireless access","authors":"M. M. A. Hossain, R. Jäntti","doi":"10.1109/GreenCom.2011.6082504","DOIUrl":null,"url":null,"abstract":"Energy consumption of next generation radio access network is posing a deep impact on CO2 emission and network operating cost. In a macro site, radio equipment dominates the power consumption. Specifically, the power amplifiers consume 70% of the total input power. In case of WCDMA and OFDMA, the Traditional Power Amplifier (TPA) suffers from low efficiency due to the non-constant envelope signals. To improve efficiency in case of these kinds of signals, deployment of Envelope Tracking Power Amplifier (ET-PA) is a viable solution. In this paper, the efficiency vs. output power characteristics of the ET-PA has been modeled. Moreover, by carrying out system level simulation in WCDMA network scenario, we show that 7–15% energy can be saved by replacing TPA by ET-PA.","PeriodicalId":179862,"journal":{"name":"2011 IEEE Online Conference on Green Communications","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"24","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 IEEE Online Conference on Green Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/GreenCom.2011.6082504","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 24
Abstract
Energy consumption of next generation radio access network is posing a deep impact on CO2 emission and network operating cost. In a macro site, radio equipment dominates the power consumption. Specifically, the power amplifiers consume 70% of the total input power. In case of WCDMA and OFDMA, the Traditional Power Amplifier (TPA) suffers from low efficiency due to the non-constant envelope signals. To improve efficiency in case of these kinds of signals, deployment of Envelope Tracking Power Amplifier (ET-PA) is a viable solution. In this paper, the efficiency vs. output power characteristics of the ET-PA has been modeled. Moreover, by carrying out system level simulation in WCDMA network scenario, we show that 7–15% energy can be saved by replacing TPA by ET-PA.