Effects of hopping codes in TH-SS UWB signals

Wei De Wu*, Chung-Hsuan Wang, Chi Chao Chao

*Corresponding author for this work

Research output: Contribution to journalConference article

2 Scopus citations


In this paper, we study the hopping code effects on the time-hopping spread-spectrum (TH-SS) ultra-wideband (UWB) signals to address the achievability of the desired signal properties. Specifically, we investigate the code features leading to the low averaged spectral power level and good receiver performance. For the former concern, an explicit relation between the hopping code and the power spectral density (PSD) is derived. Then two practical propositions about the averaged spectral power level are developed. For the receiver performance, we discuss the code features leading to low noise, narrowband interference (NBI), and multiple-access interference (MAI) by virtue of the filter interpretation of the RAKE combiner which is conventionally adopted in a UWB receiver. Notably, our work suggests to focus on finding/constructing those hopping sub-codes with proper spectrum properties instead of the entire codes.

Original languageEnglish
Pages (from-to)1308-1312
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number2
StatePublished - 1 Dec 2003
Event2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall - Orlando, FL, United States
Duration: 6 Oct 20039 Oct 2003

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