A UWB communication system based on dechirp pulse compression and OOK modulation  

作　　者：赵亮 Jin Liang Huang Kaizhi Zhang Jian Chen Jinyu 

机构地区：[1]National Digital Switching System Engineering & Technological R&D Center

出　　处：《High Technology Letters》2013年第2期190-196,共7页高技术通讯（英文版）

基　　金：Supported by the National High Technology Research and Development Program of China(No.2009 AA011202,2009AA011205);the National Science and Technology Major Project of China(No.2009ZX03006-007)

摘　　要：In this paper,a novel UWB communication system structure is proposed.The transmitted signal uses OOK modulation and chirp spread spectrum.The received signal first goes through a dechirp pulse compression process,and then is processed with a two-level sliding correlation algorithm for coarse timing synchronization and fine timing synchronization.After the SNR estimation,the signal is demodulated by an energy detection method.An integrated system level simulation model is established,and the performance of this system is evaluated over the AWGN channel,IEEE 802.15.3a CM1 and CM4 channels.The theoretical analysis and simulation results show that this UWB communication system can effectively reduce the sampling rate and signal processing speed at the receiver,and it is more suitable for long-distance and low-rate UWB communications with high spreading gain.In this paper, a novel UWB communication system structure is proposed. The transmitted sig- nal uses OOK modulation and chirp spread spectrum. The received signal first goes through a dechirp pulse compression process, and then is processed with a two-level sliding correlation algo- rithm for coarse timing synchronization and fine timing synchronization. After the SNR estimation, the signal is demodulated by an energy detection method. An integrated system level simulation model is established, and the performance of this system is evaluated over the AWGN channel, IEEE 802.15.3a CM1 and CM4 channels. The theoretical analysis and simulation results show that this UWB communication system can effectively reduce the sampling rate and signal processing speed at the receiver, and it is more suitable for long-distance and low-rate UWB communications with high spreading gain.

关 键 词：uhra wide band （UWB） dechirp pulse compression on-off keying （OOK） sliding correlation BER 

分 类 号：TN925[电子电信—通信与信息系统]