| 频率选择性信道下基于虚拟MIMO-STBC的无线传感器网络中功率分配的研究 |
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| 引用本文： | 严凯,邱云周,丁盛,朱明华,刘海涛.频率选择性信道下基于虚拟MIMO-STBC的无线传感器网络中功率分配的研究[J].高技术通讯,2008,18(7). |
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| 作者姓名： | 严凯 邱云周 丁盛 朱明华 刘海涛 |
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| 作者单位： | 中国科学院上海微系统与信息技术研究所无线传感网与通信重点实验室,上海,200050 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 结合频域均衡(FDE)研究了在频率选择性衰落信道下基于虚拟 MIMO-STBC 的无线传感器网络的功率分配(PA)方案.利用从目标簇反馈回信源簇的信道状态信息,在协同传输节点总发送功率一定的情况下,通过最大化信宿节点接收到数据的信噪比推导出了一种基于滤波器组频域加权的 PA 方案.仿真结果表明,在系统一定的误码率要求下,采用这种 PA 方案的无线传感器网络所需要的发射功率要少于等 PA 方案所需要的发射功率,从而减少了无线传感器网络的能耗.
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| 关 键 词： | 虚拟多输入多输出 功率分配 频域均衡 空时分组码 无线传感器网络 |
On power allocation for virtual MIMO-STBC based wireless sensor networks over frequency-selective fading channels |
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| Yan Kai,Qiu Yunzhou,Ding Sheng,Zhu Minghua,Liu Haitao.On power allocation for virtual MIMO-STBC based wireless sensor networks over frequency-selective fading channels[J].High Technology Letters,2008,18(7). |
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| Authors: | Yan Kai Qiu Yunzhou Ding Sheng Zhu Minghua Liu Haitao |
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| Affiliation: | Key Laboratory of Wireless Sensor Network & Communication;Shanghai Institute of Microsystem and Information Technology;Chinese Academy of Sciences;Shanghai 200050 |
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| Abstract: | The problem of power allocation (PA) in virtual multiple-input-multiple-output (MIMO)-space-time block codes (STBC) based wireless sensor networks (WSN) over frequency-selective fading channels was studied in the light of the frequency-domain equalization (FDE) technology.With the channel state information fed from the destination cluster to the source cluster,a novel PA scheme based on the frequency-weighted approach was derived by maximizing signal-to- noise ratio (SNR) for block-wise received data at the... |
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