Title :
Study on Blind Estimation of Weak DS-UWB Signals
Author :
Zhang, Tianqi ; Gao, Xiangyun ; Yang, Liufei ; Dai, Shaosheng ; Jiang, Qingping
Author_Institution :
Chongqing Key Lab. of Signal & Inf. Process. (CqKLS&IP), Chongqing Univ. of Posts & Telecommun. (CQUPT), Chongqing, China
Abstract :
In this paper, the signal model and expression in time domain of DS-UWB signal are introduced, and an approach using eigen-analysis of correlation matrix for DS-UWB signal is proposed to blindly estimate the PN sequence and several parameters in low SNR DS-UWB signal. Compared with the previous methods, both synchronization and PN sequence estimation can be realized simultaneously by the approach in this paper. Based on the theoretic analysis, experimental results show that this approach is very effective in lower SNR.
Keywords :
eigenvalues and eigenfunctions; matrix algebra; spread spectrum communication; ultra wideband communication; PN sequence estimation; blind estimation; correlation matrix; eigen-analysis; weak DS-UWB signals; Algorithm design and analysis; Information processing; Laboratories; Parameter estimation; Radar tracking; Signal processing; Signal resolution; Signal to noise ratio; Spread spectrum radar; Ultra wideband technology;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5305365
