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首页> 外文期刊>Wireless Communications Letters, IEEE >Energy-Efficient Design of MIMO Processing for Two-Tier Wireless Sensor Networks
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Energy-Efficient Design of MIMO Processing for Two-Tier Wireless Sensor Networks

机译：两层无线传感器网络的MIMO处理的节能设计

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摘要

This letter studies the energy-efficient design of linear processing strategies for a wireless sensor network consisting of two-tier wireless links. In the system, a set of single-antenna sensor nodes sense the information of interest and report the sensed data to a fusion center (FC) through a set of relay nodes. It is assumed that the FC and relay nodes are equipped with multiple antennas and the sensors-to-relays and the relays-to-FC channels are separated in frequency or time domain. Motivated by the observation that remote sensors tend to be equipped with limited battery life, this letter tackles the problem of maximizing the minimum of the energy efficiency metrics of the sensors while satisfying the per-sensor and per-relay transmit power constraints under compress-and-forward relaying strategy at the relays. Numerical results validate the advantages of the proposed energy-efficient design as compared to the conventional spectrally efficient scheme.
机译：这封信研究了由两层无线链路组成的无线传感器网络的线性处理策略的节能设计。在该系统中，一组单天线传感器节点感测到感兴趣的信息，并通过一组中继节点将感测到的数据报告给融合中心（FC）。假定FC和中继节点配备有多个天线，并且传感器到继电器和中继到FC通道在频域或时域中是分开的。由于观察到远程传感器往往配备有限的电池寿命，因此这封信解决了使传感器的能效指标最小化的问题，同时满足了压缩和压缩条件下每个传感器和每个中继的发射功率约束中继的转发策略。与常规的频谱高效方案相比，数值结果验证了所提出的节能设计的优势。

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