A Stable Rapid Timing Synchronization Scheme for Impulse Radio UWB

Rapid synchronization acquisition is one of the biggest challenges of burst-mode transmission for ultra-wide band (UWB) wireless communications, especially for the impulse radio UWB (IR-UWB) due to the very short duration of the monopulse. Some rapid synchronization acquisition schemes have been proposed in the literature to reduce the mean acquisition time. However, most of them have no stability, i.e., when the delay time of arrive (TOA) for the transmitted signals becomes larger, the mean acquisition time will increase linearly. In this paper, a stable and rapid synchronization acquisition, namely selective bit reversal block search (SBRBS), is presented. The algorithm takes full advantage of the bit reversal technique, which can keep the maximum interval between the two neighboring uncertain search points to improve the detection probability and achieve a smallest search terminating time every four consecutive search points. The paper analyzes the stability of the proposed scheme in detail and makes comparison with other algorithms. Theoretical analysis and simulation results show that the proposed algorithm outperforms others in term of reduced synchronization acquisition time and increased stability.

[1]  J. Iinatti,et al.  On the performance comparison of different UWB data modulation schemes in AWGN channel in the presence of jamming , 2002, Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573).

[2]  Yoan Shin,et al.  A rapid acquisition scheme for UWB signals in indoor wireless channels , 2004, 2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733).

[3]  A. Rabbachin,et al.  Synchronization analysis for UWB systems with a low-complexity energy collection receiver , 2004, 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS 2004 (IEEE Cat. No.04EX812).

[4]  Moe Z. Win,et al.  Ultra-wide bandwidth signal propagation for indoor wireless communications , 1997, Proceedings of ICC'97 - International Conference on Communications.

[5]  Ning He,et al.  Analysis of a synchronization algorithm for non-coherent UWB receivers , 2005, Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005..

[6]  Gerard J. M. Janssen,et al.  Analysis and comparison of autocorrelation receivers for IR-UWB signals based on differential detection , 2004, 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[7]  Georgios B. Giannakis,et al.  BER sensitivity to mistiming in ultra-wideband impulse Radios-part I: nonrandom channels , 2005, IEEE Transactions on Signal Processing.

[8]  Gang Wei,et al.  A rapid synchronization acquisition scheme for UWB communications , 2006, 2006 1st International Symposium on Systems and Control in Aerospace and Astronautics.

[9]  R.A. Scholtz,et al.  Rapid acquisition of ultra-wideband signals in the dense multipath channel , 2002, 2002 IEEE Conference on Ultra Wideband Systems and Technologies (IEEE Cat. No.02EX580).

[10]  Andreas F. Molisch,et al.  A rapid acquisition technique for impulse radio , 2003, 2003 IEEE Pacific Rim Conference on Communications Computers and Signal Processing (PACRIM 2003) (Cat. No.03CH37490).