1bit脉冲超宽带接收机采样抖动性能分析方法

发布时间：2018-05-07 12:07

本文选题：脉冲超宽带 + 采样抖动　；参考：《西安电子科技大学学报》2014年01期

【摘要】：为了准确评估1bit脉冲超宽带接收机存在采样抖动时的性能,提出了一种基于中心极限定理的性能分析方法.首先将存在抖动的采样信号通过一阶泰勒展开为无抖动采样信号和采样抖动变量的线性函数,然后利用中心极限定理将接收机的判决变量建模为一个高斯分布的随机变量,从而得出接收机误码率表达式,最后根据采样抖动的随机分布模型,给出平均误码率上界表达式.该分析方法首次给出存在采样抖动时1bit数字接收机性能的解析表达式,并且可用于其他线性干扰存在情况下的性能评估.实验结果表明,给出的平均误码率上界可以很好地反映接收机的实际性能,并且可用于高斯分布和平均分布两种随机采样抖动模型.
[Abstract]:In order to accurately evaluate the performance of 1bit pulse UWB receiver with sampling jitter, a performance analysis method based on the central limit theorem is proposed. Firstly, the sample signal with jitter is expanded into a linear function of the sample signal and the sample dithering variable by the first order Taylor, and then the decision variable of the receiver is modeled as a random variable distributed by Gao Si by using the central limit theorem. Finally, according to the random distribution model of sampling jitter, the upper bound expression of average bit error rate is given. The analytical expression of the performance of 1bit digital receiver in the presence of sampling jitter is presented for the first time, and it can be used to evaluate the performance of 1bit digital receiver in the presence of other linear interference. The experimental results show that the upper bound of the average bit error rate can well reflect the actual performance of the receiver and can be used in two random sampling jitter models: Gao Si distribution and average distribution.
【作者单位】：西安交通大学电信学院;电子科技大学通信抗干扰技术国家重点实验室;中国科学技术大学电子工程与信息科学系;
【基金】：国家自然科学基金资助项目(61102082,60802008) 教育部博士点基金资助项目(20110201120011)
【分类号】：TN858

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