Blind two-step synchronization for direct-sequence UWB systems

Author

Ren, Zhiyuan ; Lv, Tiejun

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2009

fDate

13-16 Sept. 2009

Firstpage

1029

Lastpage

1033

Abstract

In this paper, a blind two-step synchronization algorithm is proposed for direct-sequence (DS) ultra-wideband (UWB) communication systems. In the first step, the start of individual frames is estimated via simple square, overlap-add operation and energy detection technique. Then the first frame in each symbol is identified by exploiting the randomicity of DS codes and information symbols at the second step. Achieving synchronization with pulse-level resolution, the proposed algorithm considerably reduces synchronization time and complexity due to the two-step synchronization structure, compared with the single-step algorithm. Simulations and comparisons confirm that the proposed approach outperforms the existing alternative in terms of normalized mean square error (NMSE) and bit error rate (BER).

Keywords

computational complexity; error statistics; mean square error methods; spread spectrum communication; synchronisation; ultra wideband communication; BER; DS UWB communication systems; DS code randomicity; NMSE; bit error rate; blind two-step synchronization; complexity reduction; direct-sequence ultra-wideband communication systems; energy detection technique; information symbols; normalized mean square error; overlap-add operation; pulse-level resolution; single-step algorithm; Bit error rate; Energy resolution; Mean square error methods; Multiple access interference; Power engineering and energy; Systems engineering education; Timing; Transmitters; Ultra wideband technology; Wireless communication; Blind estimation; Direct-sequence codes; Two-step synchronization; Ultra-Wideband impulse radio;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-5122-7

Electronic_ISBN

978-1-4244-5123-4

Type

conf

DOI

10.1109/PIMRC.2009.5450031

Filename

5450031