Title :
Synchronization Algorithm Based on Pseudo Random Time-Hopping Codes for UWB Systems
Author :
Qiao, Yongwei ; Lv, Tiejun
Author_Institution :
Sch. of Inf. Eng., Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In this paper, we propose a new blind synchronization algorithm for ultra-wideband (UWB) systems based on pseudo random time-hopping (TH) codes. The synchronization parameter is acquired by using integrate-and-dump (I&D) among several segments (these segments are chosen according to a user-specific TH codes) of the observation waveform and peak-picking the outputs of the I&D device. Due to the pseudo random property of the TH codes, the maximum significantly differs from other values, thus the proposed algorithm has high immunity to noise. Owing to the periodicity of the TH codes, one symbol-long observation interval is enough to achieve synchronization, which speeds up the overall synchronization process. Simulations and comparisons confirm that our algorithm outperforms existing similar one in terms of normalized mean square error (NMSE) and bit error rate (BER).
Keywords :
error statistics; mean square error methods; random codes; random sequences; synchronisation; ultra wideband communication; BER; NMSE; UWB systems; bit error rate; blind synchronization algorithm; integrate-and-dump operation; normalized mean square error; pseudo random time-hopping codes; ultra-wideband systems; user-specific TH codes; Baseband; Bit error rate; Correlators; FCC; Mean square error methods; Sampling methods; Statistics; Timing; Ultra wideband technology; Working environment noise;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.238
