Timing synchronization of ultra-wideband systems using delay line combination receivers
Taijung Huang
Longyan University, Institute of Mathematics and Information Engineering
DOI: https://doi.org/10.59429/esta.v12i1.9668
Keywords: Synchronization; Timing acquisition; Differential transmitted reference (DTR); Impulse radio (IR); Ultra-wideband (UWB)
Abstract
This paper proposes a novel non-data aided timing synchronization algorithm designated as ”timing with delay line combination” (TDLC), to improve the synchronization speed of differential impulse radio ultrawideband systems. Continuously integrating the combinative output signal provided by the proposed ”framedifferential delay line” (FDL), it is found that the integration output exhibits a sharp rising or falling transition at the moment that the first signal per symbol arrives. By accurately detecting the time of the rising or falling edge, the symbol boundary can be simply derived. The proposed scheme achieves timing synchronization within a single symbol duration.
References
[1] Y. L. Chao and R. A. Scholtz, “Optimal and suboptimal receivers for ultra-wideband transmitted reference systems,” in Proc. Global Telecommun. Conf. 2003, vol. 2, pp. 759-763.
[2] L. Yang and G. B. Giannakis, “Timing ultra-wideband signals with dirty templates,” IEEE Trans. Commun., vol. 53, no. 11, pp. 1952-1963, Nov. 2005.
[3] K. Witrisal, G. Leus, M. Pausini, and C. Krall, “Equivalent system model and equalization of differential impulse radio UWB systems,” IEEE J. Sel. Areas Commun., vol. 23, no. 9, pp. 1851-1862, Sept. 2005.
[4] D. B. Maria-Gabriella and G. Guerino, Understanding Ultra Wide Band Radio Fundamentals, First Edition. Prentice Hall, 2004, pp. 277 294.
[5] FCC First Report and Order: In the matter of revision of part 15 of the commission’s rules regarding ultra-wideband transmission systems, FCC 02-48, Apr. 2002.
[6] M. Z. Win and R. A. Scholtz, ”Ultra-wide Bandwidth Time-hopping Spread-spectrum Impulse for Wireless Multiple-access Communications,” IEEE Transactions on Communications, vol. 48, pp. 679-689, Apr. 2000.
[7] M. Z. Win, R. A. Scholtz, and M. A. Barnes, ”Ultra-wide Bandwidth Signal Propagation for Indoor Wireless Communications,” Proceedings of the IEEE Internal Conf. on Communications, vol. 1, June 1997, pp. 56-60.
[8] L. Yang and G. B. Giannakis, ”Low-Complexity Training for Rapid Timing Acquisition in UltraWideband Communications,” in Proceedings of IEEE Global Telecommunications Conference, San Francisco, CA, December 1-5, 2003, vol. 2, pp. 769-773.
[9] Tony Q. S. Quek and Moe Z. Win, ”Analysis of UWB Transmitted Reference Communication Systems in Dense Multipath Channels,” IEEE J. Select. Areas Commun., vol. 23, no 9, pp. 1863-1874, Sept. 2005.
[10] S. Gezici, H. Kobayashi, H. V. Poor, and A. F. Molisch, “Performance Evaluation of Impulse Radio UWB Systems with Pulse-Based Polarity Randomization,” IEEE Transactions on Signal Processing, vol. 53, no 7, pp. 2537-2549, July 2005.