A Non-Coherent Method of UWB Signal Acquisition Based on Genetic Algorithm

FONT face; Verdana; YANG Zhi-hua; ZHANG Qin-yu; ZHANG Nai-tong; FONT

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A Non-Coherent Method of UWB Signal Acquisition Based on Genetic Algorithm

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- A Non-Coherent Method of UWB Signal Acquisition Based on Genetic Algorithm
- Acta Electronica Sinica Vol. 38, Issue 7, Pages: 1568-1573(2010)
- 作者机构：
  
  哈尔滨工业大学深圳研究生院通信工程研究中心,广东,深圳,518055
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911
- Published：2010
- 稿件说明：
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FONT face, Verdana, YANG Zhi-hua, et al. A Non-Coherent Method of UWB Signal Acquisition Based on Genetic Algorithm[J]. Acta Electronica Sinica, 2010, 38(7): 1568-1573.
DOI：

FONT face, Verdana, YANG Zhi-hua, et al. A Non-Coherent Method of UWB Signal Acquisition Based on Genetic Algorithm[J]. Acta Electronica Sinica, 2010, 38(7): 1568-1573. DOI：

摘要

FONT face=Verdana>本文针对动态信噪比环境超宽带（UWB

Ultra WideBand）信号的非相干捕获，提出了一种基于遗传算法的信号捕获方案.以遗传算法结合在线估计接收信噪比，搜索积分窗口长度与定时位置的参数组合，实现系统要求的比特错误概率.该方法解决了传统捕获方案在未知信噪比条件下积分长度无法择优选取以及捕获门限难于设定的问题.仿真结果表明，基于遗传算法的二维参数捕获方法与传统Look and Jump by

steps算法相比有效的提高了未知信噪比条件下的系统捕获性能，拓展了UWB非相干系统的应用范围.

Abstract

FONT face=Verdana>Focusing on ultra wideband (UWB) signal acquisition conditional on the uncertain signals to noise ratio (SNR)

a non-coherent scheme is proposed in this article based on genetic algorithm

which combines online SNR estimation with genetic algorithm to search the parameters pair of integral length and timing alignment. Contrast with general schemes

the scheme proposed is suitable for the uncertain SNR conditions where integral length is unavailable and dynamic detection threshold is hard to be set. The results show that

compared with Look and Jump by

steps algorithm

the proposed scheme improved significantly the acquisition performances on uncertain SNRs.

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