基于簇结构超宽带无线传感器网络的传输功率优化选择算法

在簇结构超宽带无线传感器网络中,为了在可接受的实现成本范围内解决节能与功率控制问题,提出了一种传输功率优化选择算法,同时满足了预设的数据传输速度和最大限度的节能要求.然后详细地分析了该算法实现的可行性、复杂度和实现成本.仿真结果表明,本算法得出的最优传输功率大大小于传感器节点可获取的最大功率,并可以根据网络背景噪声和最大传输速度的变化而动态调整;该算法可以较为显著地延长传感器节点寿命;另外,仿真结果还表明本算法的实现成本是合理的且可接受的.

Optimal transmission power selecting algorithm for cluster based ultra-wide bandwidth wireless sensor networks

To solve the energy conservation and power control problem radically in the cluster based ultra wideband wireless sensor networks, an optimal transmission power selecting algorithm (OTPSA) was presented, the goal of which is, within the acceptable range of implementing cost, to get an optimal transmission power value based on the maximum transmission rate and the background noise level, as well as to achieve the required data transmission rate and to meet the energy conserving requirement to the greatest extent. The implementing feasibility, complexity and cost of the proposed algorithm have been analyzed and investigated in detail. The simulative results clearly show that the power consumed under OTPSA is greatly less than the maximum power gotten at each node, and can be regulated according to the fluctuation of the requirement of maximum rate and the background noise; sensor lifetime can also be prolonged by implementing the proposed scheme. Furthermore, the simulative results also indicate that the implementing cost of the presented algorithm is reasonable and acceptable.