自适应调制结合功率控制的WSN节能方案

发布时间：2018-03-10 05:13

本文选题：自适应调制　切入点：功率控制　出处：《控制工程》2017年02期 　论文类型：期刊论文

【摘要】：针对无线传感器网络的能耗问题,提出了基于自适应调制和功率控制的节能方案。首先,描述自适应调制无功率控制方案(AM无PC),使用简单封闭形式近似M-QAM加性高斯白噪声(AWGN)信道的误码率(BER)函数。然后,提出了一种简单的自适应调制与功率控制方案(AM与PC2),以延长WSN的网络寿命,接收的信噪比在两个相邻的切换阈值内增加,降低了传输功率以实现节能。最后,通过数值计算表明,提出的方案可减少更多的平均传输功率,并保持目标BER。仿真结果表明,相比其他几种较新的方案,提出的方案实现了更高的数据包投递率和更好的网络可靠性,并延长了网络寿命。
[Abstract]:To solve the problem of energy consumption in wireless sensor networks, an energy saving scheme based on adaptive modulation and power control is proposed. In this paper, the adaptive modulation no-power control scheme is described. The simple closed form is used to approximate the bit error rate (BER) function of M-QAM additive Gao Si white noise (AWGN) channel. Then, a simple closed form is used to approximate the bit error rate (BER) function of M-QAM additive Gao Si white noise channel. In this paper, a simple adaptive modulation and power control scheme, AM and PC2, is proposed to prolong the network life of WSN, increase the SNR in two adjacent switching thresholds, and reduce the transmission power to achieve energy saving. Numerical results show that the proposed scheme can reduce the average transmission power more and keep the target per. The simulation results show that the proposed scheme is more recent than other schemes. The proposed scheme achieves higher packet delivery rate, better network reliability and longer network life.
【作者单位】：周口师范学院计算机科学与技术学院;
【基金】：河南省软科学计划项目(142400411213) 河南省基础与前沿技术研究项目(132300410479,142300410339) 河南省高等学校重点科研项目(15A520118)
【分类号】：TN929.5;TP212.9

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