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Semi-Blind ML Synchronization for UWB Systems

机译:UWB系统的半盲ML同步

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摘要

Synchronization is one of the most critical issues in PPM/TH ultra-wideband (UWB) communications due to the short duration of the pulses. In this work, we study a semi-blind synchronization scheme based on maximum-likelihood (ML) techniques to recover both symbol and frame timing. The proposed algorithm offers rapid acquisition and is robust against small timing errors due to a joint timing and channel estimate. The performance of the proposed algorithm is analyzed based on correlated Gaussian random variables and shown to be accurate for moderate to high SNR values.
机译:由于脉冲持续时间短,因此同步是PPM / TH超宽带(UWB)通信中最关键的问题之一。在这项工作中,我们研究了基于最大似然(ML)技术的半盲同步方案,以恢复符号和帧时序。所提出的算法提供了快速的捕获能力,并且由于联合的时序和信道估计而对较小的时序误差具有鲁棒性。基于相关的高斯随机变量对所提出算法的性能进行了分析,结果表明该算法对于中等至高SNR值是准确的。

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