期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
变电站6kV刀闸状态监控研究分析 被引量:1
1
作者 王德才 曾瑾文 《自动化应用》 2011年第9期40-40,49,共2页
为了准确有效监控刀闸的分合闸状态,提出在6kV刀闸操作连杆上加装2个行程开关,再辅助有2个灯光回路,提示现场操作人员,最后将刀闸状态量传输到后台微机,以便值班员监察刀闸运行状态。
关键词 行程开关 刀闸 远程监控 刀闸分合闸状态 继电器节点
下载PDF
A Decode-and-Forward Scheme for LDPC Coded Three-Way Relay Fading Channels 被引量:2
2
作者 YE Xia GAO Feifei 《China Communications》 SCIE CSCD 2015年第8期46-54,共9页
In this paper a low-density pairwise check(LDPC) coded three-way relay system is considered, where three user nodes desire to exchange messages with the help of one relay node. Since physical-layer network coding is a... In this paper a low-density pairwise check(LDPC) coded three-way relay system is considered, where three user nodes desire to exchange messages with the help of one relay node. Since physical-layer network coding is applied, two time slots are sufficient for one round information exchange. In this paper, we present a decode-and-forward(DF) scheme based on joint LDPC decoding for three-way relay channels, where relay decoder partially decodes the network code rather than fully decodes all the user messages. Simulation results show that the new DF scheme considerably outperforms other common schemes in three-way relay fading channels. 展开更多
关键词 three-way relay channel physicallayer network coding LDPC codes decode-and forward
下载PDF
Outage Performance and Diversity Analysis for Multi-antenna Multi-relay Networks
3
作者 Liu Ning Yi Ping +2 位作者 Li Jianing Li Jianhua Wu Yue 《China Communications》 SCIE CSCD 2010年第3期53-63,共11页
The performance of multi-antenna multi-relay cooperative system is investigated in this paper. Two relaying strategies, i.e., reactive and proactive strategies are analyzed with the Amplifyand-Forward (AF) and Decode-... The performance of multi-antenna multi-relay cooperative system is investigated in this paper. Two relaying strategies, i.e., reactive and proactive strategies are analyzed with the Amplifyand-Forward (AF) and Decode-and-Forward (DF) protocols. We derive the Cumulative Distribution Function (CDF) of the received Signal-to-Noise Ratio (SNR) at the destination, which is used to calculate the exact outage probability, for both AF and DF protocols. According to these results, we conclude that a cooperative network which composes K relays each equipped with nr antennas can achieve maximal order-(2nrK+1) diversity gain, by proper processing at relays and destination. Furthermore, the performance comparison is given, in terms of outage probability. These two strategies outperform each other in different scenarios in AF protocol, whilst proactive strategy is always better than its counterpart in DF protocol. According to these results, the optimal power allocation schemes among relay nodes are also presented, with reasonable power constraint. 展开更多
关键词 cooperative diversity outage probability antenna array gain
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部