Fast symbol-level synchronization for TR-UWB signals using double hybrid DS-TH spreading |
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Authors: | Zhuo Zhang Zhengnan Ji Shijie Zhang Hao Yin |
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Institution: | 1. Institute of Communications Engineering, PLA Univ. of Sci. & Tech., Nanjing 210007, China 2. Command Automation Station, Joint Logistics Department of Shenyang Military Area, Shenyang 110005, China 3. Institute of China Electronic System Engineering Corporation, Beijing 100039, China |
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Abstract: | A Transmitted Reference (TR) Ultra WideBand (UWB) signal with double hybrid Direct Sequence and Time Hopping (DS-TH) spreading is proposed and its symbol-level synchronization scheme is designed and analyzed. The proposed signaling format can significantly reduce the search space while reducing the spectral lines and eliminating inter-frame interference and multi-user interference. Detailed analysis of the proposed scheme is carried out. Synchronization performance of the proposed signaling format in multipath channel is derived and supported by computer simulation. The search step which is closely associated with the delay of data modulated pulses is analyzed. Using the TH code, the proposed signaling format and synchronization scheme especially works well in moderate and low data rate systems. |
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Keywords: | Ultra-WideBand (UWB) Transmitted Reference (TR) Synchronization Spread spectrum |
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