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《真空电子技术》编辑部 《真空电子技术》2023,(5):I0002-I0002
按照“关于2022年《真空电子技术》优秀论文评选标准的通知”中优秀论文评选要求,《真空电子技术》编辑部和编委老师认真地对2022年度期刊刊登的文章进行了初选和终评,依据论文的学术质量、影响力和读者反响等因素,评选出2022年度优秀论文8篇,其中一等奖1名,二等奖2名,三等奖5名。 相似文献
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《真空电子技术》编辑部 《真空电子技术》2023,(3):85-85
按照“关于2022年《真空电子技术》优秀论文评选标准的通知”中优秀论文评选要求,《真空电子技术》编辑部和编委老师认真地对2022年度期刊发表的论文进行了初选和终评,依据论文的学术质量、影响力和读者反响等因素,评选出2022年度优秀论文8篇,其中一等奖1名,二等奖2名,三等奖5名;综合考虑审稿专家的审稿数量、颗粒度等因素,评选出2022年度优秀审稿人9名(按姓氏笔画排序,排名不分先后)。 相似文献
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《中兴通讯技术(英文版)》2013,(4):1
Special Issue on Wireless Body Area Networks for Pervasive Healthcare and Smart EnvironmentsWireless body area networks(WBANs)employ radio-frequency communications to interconnect tiny sen sor nodes in,on,or around human bodies to provide continuous monitoring of physiological signals,physical 相似文献
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《通信管理与技术》2002,(3):10-10
20 0 2年第 3号根据《中华人民共和国电信条例》和信息产业部《电信服务质量监督管理暂行办法》、《电信服务质量通告制度》的规定 ,现将 2 0 0 2年 4~ 6月黑龙江省电信用户申诉受理中心 (以下简称申诉中心 )受理的用户申诉情况公布如下 :1 基本情况2 0 0 2年 4~ 6月黑龙江省电信用户申诉受理中心共受理用户申诉 992件 ,其中 :采用电话方式申诉的有985件、采用信函方式申诉的有 2件、采用来访方式申诉的有 5件 (详见表 1)。 表 1:受理用户申诉基本情况表月份申诉方式 电话信函 电子邮件 传真来访 合计(件 )4月 31 92 0 0 1 32 25月 32… 相似文献
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Active Antenna Selection in Multiuser MIMO Communications 总被引:1,自引:0,他引:1
The paper develops a dynamic antenna scheduling strategy for downlink MIMO communications, where a subset of the receive antennas at certain users is selectively disabled. The proposed method improves the signal-to-leakage-plus-noise (SLNR) ratio performance of the system and it relaxes the condition on the number of transmit-receive antennas in comparison to traditional zero-forcing and time-scheduling strategies. The largest value that the SLNR can achieve is shown to be equal to the maximum eigenvalue of a certain random matrix combination, and the probability distribution of this eigenvalue is characterized in terms of a Whittaker function. The result shows that increasing the number of antennas at some users can degrade the SLNR performance at other users. This fact is used to propose an antenna scheduling scheme that leads to improvement in terms of SINR outage probabilities 相似文献
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Transmit power limitations and quality-impairing channels present key challenges to wireless communications. A possible solution to these problems is the application of usercooperation techniques so as to improve link quality. This paper studies the tradeoffs involved in combining user cooperation with practical source and channel coding in systems featuring rateadaptive source and channel coding of conversational traffic. Performance is measured through the D-SNR curve, which measures the relation between end-to-end distortion and channel Signal-to-Noise Ratio (SNR). The D-SNR curve is accurately characterized as a linear function in log-log scales. Also, it is shown that the tradeoffs involved in combining amplify-andforward or decode-and-forward cooperation with source and channel coding translates into cooperative schemes showing a decrease in distortion at approximately half the rate as noncooperative schemes but with larger coding gain. Because of this, the studied non-cooperative schemes show better performance only at high SNR. In addition, the D-SNR characterization is used to compare amplify-and-forward and decode-and-forward cooperation for channel codes of different strength and to study the effects of source codec efficiency, where it is shown that diversity gain is reduced proportionally to the source codec loss of efficiency. 相似文献