Turbo-like synchronization for UWB-IR links

M. Biagi, E. Baccarelli, C. Pelizzoni, N. Cordeschi, Irene Salas Arzola
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引用次数: 3

Abstract

This contribution deals with the Turbo-like noncoherent data-aided (e.g., no blind) synchronization of Ultra-Wideband Impulse-Radio (UWB-IR) terminals operating over broadband channels affected by multipath fading with ¿a priori¿ unknown number of paths. The synchronizer we develop achieves the data-aided joint estimate of the number of paths and their arrival times without requiring any a priori knowledge of the amplitude (module and sign) of the channel-gains. The ultimate performance of the proposed synchronizer is evaluated by considering the number of pilots needed to estimate the channel delays and, more, the Bit Error Rate achievable on the basis of delays and amplitude estimation. The idea behind this approach is to use a turbo-like structure to improve performance so to allow a SNR gain even if channel models are considered in the presence of Inter Pulse Interference (IPI).
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UWB-IR链路的涡轮式同步
该贡献涉及在受路径数量未知的多径衰落影响的宽带信道上运行的超宽带脉冲无线电(UWB-IR)终端的涡轮式非相干数据辅助(例如,无盲)同步。我们开发的同步器实现了对路径数量及其到达时间的数据辅助联合估计,而不需要对通道增益的幅度(模块和符号)有任何先验知识。通过考虑估计信道延迟所需的导频数量以及基于延迟和幅度估计可实现的误码率来评估所提出的同步器的最终性能。这种方法背后的想法是使用类似涡轮的结构来提高性能,以便即使在考虑存在脉冲间干扰(IPI)的信道模型时也能获得信噪比增益。
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