移频参考超宽带系统的分析与仿真:频率、数据速率和通信的影响

V. Raskar, S. Lahudkar
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引用次数: 0

摘要

超宽带(UWB)无线电通信在网络传感器等低数据级应用中发挥着重要作用,并广泛应用于短期通信的高数据速率。然而,巨大的衰落信道可解路径比例干扰了接收机的布局。为了解决这些问题(时序和信道估计),使用了信道通信,传输参考(TR) UWB系统。然而,TR-UWB系统的实现面临着难以在低功耗集成电路中构建和延迟维度神秘的问题。为了克服这些问题,研究提出了一种移频参考(FSR)超宽带系统,用于估计定时误差和控制定时脉冲。具体来说,研究了多径信道条件下FSR-UWB系统中基于粒子滤波的跟踪环路。粒子是离散的,信号具有随时间增长的分布样本。仿真结果表明,采用数字定时环可以获得更高的跟踪精度和更宽的定时范围。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis and Simulation of Frequency Shifted Reference Ultra-Wideband System: Effects of frequency, data rate and communication
Ultra-Wide Band (UWB) radio communication plays a major role and widely applied for low data level applications like networks sensor and delivers data rates which are high for short-term communications. However, the enormous ratio of fading channel solvable paths confounds the layout of the receiver. To solve these issues (timing and channel estimation), channel communication, transmitted reference (TR) UWB systems were used. Still, the implementation of the TR-UWB systems faces problems as difficulty building in an integrated circuit with low power and mysterious delay dimension. To overcome these issues, the study presents a Frequency-Shifted Reference (FSR) UWB system toward estimating the timing error and control the timing pulse. Specifically, a tracking loop based on particle filtering with the acquisition method in FSR-UWB system with multipath channel conditions has been considered. The particles are discrete and signals are having distributed samples that grow over time. From the simulation results, it is seen that a higher tracking precision and wider timing range is obtained with digital timing loop.
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