| A New UWB Receiver in the Indoor Multipath Environment |
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| 作者姓名： | ZHAO Wei-chun LIU Dan-pu YUE Guang-xin Wireless Innovation Technologies Laboratory Beijing University of Posts and Telecommunications Beijing P.R. China |
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| 作者单位： | ZHAO Wei-chun，LIU Dan-pu，YUE Guang-xin Wireless Innovation Technologies Laboratory，Beijing University of Posts and Telecommunications，Beijing 100876，P.R. China |
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| 基金项目： | This work is supported by National “863” High Technology Project (2003AA12331004) , and National Nature Scientific Fundation of China(60472070) . |
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| 摘 要： | 1IntroductionUWBtechnology has receivedincreasing attentionforits broad applicability to short-range wireless communi-cations andradar applications as well .The basic conceptis to transmit , and receive an i mpulse like stream ofverylowpower density for its lowduty cycle and ultra-short duration pulses———typically shorter than a fewnanoseconds .One of the main propagation characteristics of UWBis that signals are spread over a long train of pulses duetothe reflection ,diffractions and sca…
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A New UWB Receiver in the Indoor Multipath Environment |
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| ZHAO Wei-chun,LIU Dan-pu,YUE Guang-xin Wireless Innovation Technologies Laboratory,Beijing University of Posts and Telecommunications,Beijing ,P.R. China.A New UWB Receiver in the Indoor Multipath Environment[J].The Journal of China Universities of Posts and Telecommunications,2005,12(2). |
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| Authors: | ZHAO Wei-Chun LIU Dan-pu YUE Guang-xin |
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| Abstract: | In the literatures about Ultra Wide Band (UWB) to date, the receiver structure is mainly based on Rake receiver. But due to the wave distortion caused by overlapped between the received and the sent pulses, a lot of energy in demodulator will be lost. In this paper, a new receiver is developed by adopting maximum likelihood algorithm, in which RAKE structure is not needed and can also be implemented easily. The simulation showed that this method has BER advantage over the traditional RAKE receiver with maximal ratio combining at high SNR, and over the autocorrelation receiver as well. |
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| Keywords: | UWB synchronize local correlation function RAKE receiver estimation autocorrelation receiver |
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