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浅谈下一代移动通信技术——大规模MIMO系统
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作者 唐锟 谭永宏 +1 位作者 刘爱林 唐鑫凌 《湖南科技学院学报》 2015年第10期28-30,共3页
由于物联网等新兴技术的发展,未来的通信技术需要支持更高的数据传输速率和满足一定的服务质量。目前,第四代移动通信技术(4G)不足以满足未来大规模用户的高速数据传输。大规模多输入多输出(MIMO)通信系统作为下一代移动通信技术的一个... 由于物联网等新兴技术的发展,未来的通信技术需要支持更高的数据传输速率和满足一定的服务质量。目前,第四代移动通信技术(4G)不足以满足未来大规模用户的高速数据传输。大规模多输入多输出(MIMO)通信系统作为下一代移动通信技术的一个热点,能提供更高的数据传输速率和更好的能效性支持未来对于通信的需求。针对这项技术,本文将从系统模型,信息预估检测和导频污染三个方面进行分析。 展开更多
关键词 大规模MIMO通信技术 数据传输速率 信道 信息预编码 导频污染
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Opportunistic Vector Perturbation with Superposition Signalling
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作者 CHEN Rui LI Changle LI Jiandong 《China Communications》 SCIE CSCD 2015年第12期160-165,共6页
In this letter,we first put forward a new basic problem to the famous vector perturbation(VP) precoding that whether the extended constellation of VP could transmit more information bits.Then,we propose an opportunist... In this letter,we first put forward a new basic problem to the famous vector perturbation(VP) precoding that whether the extended constellation of VP could transmit more information bits.Then,we propose an opportunistic vector perturbation(OVP) precoding with superposition signalling scheme,which is aimed at getting the performance of VP closer to capacity limit.The main idea is using subsequent recoverable data symbol vector to perturb currently transmitting data symbol vector opportunistically.Analysis and simulation results show that the proposed OVP can transmit more valid information bits than conventional VP at the same transmit power,modulation order and number of antennas. 展开更多
关键词 transmit symbol opportunistic constellation perturbation subsequent closer downlink aimed antenna
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A bioinformatics method for predicting long noncoding RNAs associated with vascular disease 被引量:2
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作者 LI JianWei GAO Cheng +6 位作者 WANG YuChen MA Wei TU Jian WANG JunPei CHEN ZhenZhen KONG Wei CUI QingHua 《Science China(Life Sciences)》 SCIE CAS 2014年第8期852-857,共6页
Long noncoding RNAs(lncRNAs)play important roles in human diseases including vascular disease.Given the large number of lncRNAs,however,whether the majority of them are associated with vascular disease remains unknown... Long noncoding RNAs(lncRNAs)play important roles in human diseases including vascular disease.Given the large number of lncRNAs,however,whether the majority of them are associated with vascular disease remains unknown.For this purpose,here we present a genomic location based bioinformatics method to predict the lncRNAs associated with vascular disease.We applied the presented method to globally screen the human lncRNAs potentially involved in vascular disease.As a result,we predicted 3043 putative vascular disease associated lncRNAs.To test the accuracy of the method,we selected 10 lncRNAs predicted to be implicated in proliferation and migration of vascular smooth muscle cells(VSMCs)for further experimental validation.The results confirmed that eight of the 10 lncRNAs(80%)are validated.This result suggests that the presented method has a reliable prediction performance.Finally,the presented bioinformatics method and the predicted vascular disease associated lncRNAs together may provide helps for not only better understanding of the roles of lncRNAs in vascular disease but also the identification of novel molecules for the diagnosis and therapy of vascular disease. 展开更多
关键词 vascular disease lncRNAs BIOINFORMATICS
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