| 基于自适应协作分集技术的无线传感器网络 |
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| 引用本文： | 刁新颖,张曙,郭冬梅. 基于自适应协作分集技术的无线传感器网络[J]. 传感器与微系统, 2011, 30(3): 76-80 |
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| 作者姓名： | 刁新颖 张曙 郭冬梅 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国防基础研究基金资助项目 |
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| 摘 要： | 协作分集技术利用网络中的多个用户共享天线,形成虚拟多天线系统,可以有效地提高系统性能.电平交叉率和平均中断时间是衡量系统二阶统计特性的重要指标.研究了2个备选中继的增量放大(2R-IAF)协作分集无线传感器网络系统,并且给出了这种系统的中断性能闭合表达式,公式仿真结果表明:中断概率并不是随着切换门限的升高而降低的,在切...
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| 关 键 词： | 通信技术 协同分集 增量中继 电平交叉率 平均中断时间 最大比合并 瑞利衰落 放大转发中继 |
Wireless sensor networks based on adaptive cooperative diversity technology |
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| DIAO Xin-ying,ZHANG Shu,GUO Dong-mei. Wireless sensor networks based on adaptive cooperative diversity technology[J]. Transducer and Microsystem Technology, 2011, 30(3): 76-80 |
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| Authors: | DIAO Xin-ying ZHANG Shu GUO Dong-mei |
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| Affiliation: | (College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | Cooperative diversity technology has been recently proposed as a way to form virtual multi-antenna arrays that can be used to improve the performance of the wireless networks.The average level crossing rate and the average output duration are important index to judge system’s the second-order statisic character.An incremental amplify-and-forward relaying system with two relays(2R-IAF)is presented.Closed-form expressions for the outage probability are given.And the average level crossing rate and the average output duration of the 2R-IAF system are also presented.Results show that the normalization average level crossing rate and the average output duration are highly dependent on the choice of switching threshold and outage threshold. |
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| Keywords: | communication technology cooperative diversity incremental relaying average level crossing rate average output duration maximal ratio combining Rayleigh fading amplify-and-forward relaying |
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