超寬帶無線電中跳時(shí)序列相關(guān)性能的研究
Analysis of TH Correlation Property in UWB
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摘要: 跳時(shí)技術(shù)是超寬帶無線電通信技術(shù)的一個(gè)重要組成部分,在該系統(tǒng)中起著至關(guān)重要的作用。為 了滿足系統(tǒng)的要求,跳時(shí)序列必須具有良好的相關(guān)性能,即自相關(guān)性和互相關(guān)性。該文分析了跳時(shí)序列的相關(guān)性能,得出了跳時(shí)序列相關(guān)值的上界和下界。同時(shí)還提出了一種改善跳時(shí)序列相關(guān)性能的方法,使得跳時(shí)序列的最大互相關(guān)值和最大異相自相關(guān)值都降低了一半。
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關(guān)鍵詞:
- 超寬帶無線電; 跳時(shí)序列; 相關(guān)性能
Abstract: For Ultra WideBand (UWB) communication technology, the design of Time-Hopping (TH) sequences is a critical point and good TPI correlation property is desired. In this paper, through analyzing TH correlation property, the TH correlation function is defined. Based on the definition, the limits of TH correlation property are obtained, and the-relation between TH correlation function and Frequency-Hopping (FH) correlation function is derived. In addition, this paper presents a method that improves TH correlation property. -
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