UWB信源低复杂度频域TOA估计

Low complexity frequency domain TOA estimation for UWB sources

研究了UWB信号源在测距应用中的TOA估计问题,提出在频域进行TOA估计可降低接收机的采样率和能耗,并可简化接收机结构。对提出的基于状态空间的两种TOA估计算法计算复杂度和性能进行了比较,通过实际的信道模型仿真分析可知,两种频域TOA算法都可以达到精确的测距估计,但归一化幂乘法的计算量更小。文中方案特别适合于低速率、低功耗场合的定位应用。

TOA(Time of Arrival) estimation is investigated for ranging applications with UWB signal source.TOA estimation in the frequency domain is proposed,which reduces the sampling rate and the power consumption of receiver,as well simplifies the receiver structure.The computational complexity and performance of both algorithms based on the state space are compared.The simulation analysis through the practical channel model shows that boty of the TOA frequency domain algorithms can achieve precise location estimat...