Distributed Frequency Synchronization for Global Synchronization in Wireless Mesh Networks

Authors: Jung-Hyun Kim, Jihyung Kim, Kwangjae Lim, Dong Seung Kwon

Abstract:

In this paper, our focus is to assure a global frequency synchronization in OFDMA-based wireless mesh networks with local information. To acquire the global synchronization in distributed manner, we propose a novel distributed frequency synchronization (DFS) method. DFS is a method that carrier frequencies of distributed nodes converge to a common value by repetitive estimation and averaging step and sharing step. Experimental results show that DFS achieves noteworthy better synchronization success probability than existing schemes in OFDMA-based mesh networks where the estimation error is presented.

Keywords: OFDMA systems, Frequency synchronization, Distributed networks, Multiple groups.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062644

References:

[1] M. Maroti, B. Kusy, G. Simon, A. Ledeczi, "The flooding time synchronization protocol," SenSys -04, pp. 39-49, November, 2004.
[2] K.-Y. Cheng, K.-S. Lui, Y.-C. Wu, and V. Tam, "A distributed multihop time synchronization protocol for wireless sensor networks using pairwise broadcast synchronization," IEEE Trans. Wireless Commun., Vol. 8, No. 4, pp. 1764-1772, April, 2009.
[3] B. Sundararaman, U. Buy, and A. D. Kshemkalyani, "Clock synchronization for wireless sensor networks: a survey," Ad-Hoc Networks, vol. 3, no. 3, pp. 281-323, Mar. 2005.
[4] Q. Li, and D. Rus, "Global clock synchronization in sensor networks," IEEE Trans. Comput., vol. 55, no. 2, pp. 214-226, February, 2006.
[5] M. K. Maggs, S. G. O-Keefe, and D. V. Thiel, : -Consensus clock synchronization for wireless sensor networks,- IEEE Sensors Journal, vol. 12, no. 6, pp. 2269-2277, June, 2012.
[6] I. F. Akyildiz, and X. Wang, "Wireless Mesh Networks," John Wiley & Sons, 2009.
[7] IEEE 802.16m, Part 16: Air Interface for Broadband Wireless Access Systems: Advanced Air Interface, May, 2011.
[8] Recommendation ITU-R M.1225, "Guidelines for the evaluation of radio transmission technologies for IMT-2000," 1997.
[9] T. Pollet, M. Van Bladel, and M. Moeneclaey, "BER sensitivity of OFDM systems to carrier frequency offset and Weiner phase noise," IEEE Trans. Commun., Vol. 43, No. 2/3/4, pp. 191-193, February/March/April, 1995.