Open Access Open Access  Restricted Access Subscription or Fee Access

A Robust Training-Symbol Based Timing Synchronization for OFDM Systems

B Shoba, T Thamizhilakiya, Dr. K Jayanthi

Abstract


Timing synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) system must be performed efficiently and effectively to prevent inter-symbol interference (ISI) and inter-carrier interference (ICI). In this paper, a new training symbol based timing synchronization technique is proposed for OFDM systems for both outdoor as well as indoor environments and compared with the performance of existing time synchronization techniques. Simulation results are shown and it has been proved that, the proposed method outperforms the existing techniques.

Keywords


OFDM, Timing Synchronization, Orthogonality, Symbol Timing Offset, Inter Symbol Interference (ISI), Inter Carrier Interference (ICI), Training Symbol.

Full Text:

PDF

References


R. Prasad, OFDM for wireless communication system. ArtechHouse 2004.

J. A. C. Bingham, “Multicarrier modulation for data transmission: Anidea whose time has come,” IEEE Commun. Mag., vol. 28, pp. 5–14, May 1990.

T. Pollet, M. Van Bladel, and M. Moeneclaey, “BER sensitivity ofOFDM systems to carrier frequency offset and Weiner phase noise, ”IEEE Trans. Commun., vol. 43, pt. 1, pp. 191–193, Feb.–Apr. 1995.

J. J. van de Beek, M. Sandell, and P. O. B¨orjesson, “ML estimation of time and frequency offset in OFDM systems,” IEEE Trans. Signal Process. , vol. 45, no. 7, pp. 1800–1805, 1997.

F. Classen and H. Meyr, “Synchronization algorithms for an OFDMsystem for mobile communication,” ITG-Fachtagung, pp. 105–113, Oct.26–28, 1994.

T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans .Commun., vol. 45, no. 12, pp. 1613– 1621, 1997.

H. Minn, M. Zeng, and V. K. Bhargava, “On timing offset estimation for OFDM systems,” IEEE Commun. Lett., vol. 4, no. 7, pp. 242–244, 2000.

H. Minn, V. K. Bhargava, and K. B. Letaief, “A robust timing and frequency synchronization for OFDM systems,” IEEE Trans .Wireless Commun., vol. 2, no. 4, pp. 822–839, 2003.

B. Park and H. Cheon, “A Novel Timing Estimation Method for OFDM systems,” IEEE Commun. Lett., vol. 7, pp. 239 – 241, May 2003.

G. Ren, Y. Chang, H. Zhang, and H. Zhang,“Synchronization Method Based on a New Constant Envelop Preamble for OFDM Systems,” IEEE Trans. Broadcast., vol. 51, pp. 139–143, Mar. 2005.

Y. Kang, D. Ahn, and S. Kim, “Preamble pattern independent Timing Estimation for OFDM Systems.” IEEE Electronics Lett., vol. 44.pp 365-366,Feb. 2008.

G. Yi, L. Gang, and G. Jianhua, “A Novel Timing and Frequency Synchronization Scheme for OFDM Systems,” in Proc. WiCom, Sep.2007, pp. 393 – 397.

Te-Lung Kung and Keshab K.Parhi ,” Optimized Joint Timing Synchronization and Channel Estimation for OFDM Systems ,”IEEE Trans . Wireless Commun, VOL. 1, NO. 3, JUNE 2012.

Ming (Matt) Ruan, Mark C. Reed,and Zhenning Shi ,” Training Symbol Based Coarse Timing Synchronization in OFDM Systems,” IEEE TransWireless Commun., VOL. 8, NO. 5, MAY 2009.

H. Minn, V. K. Bhargava, and K. B. Letaief, “A combined timing and frequency synchronization and channel estimation for OFDM,” IEEE Trans. Commun. , vol. 54, no. 3, pp. 416–422, 2006.

H. Minn, V. K. Bhargava, and K. B. Letaief, “A robust timing and frequency synchronization for OFDM systems,” IEEE Trans. Wireless Commun. , vol. 2, no. 4, pp. 822–839, 2003.

J. J. van de Beek, M. Sandell, and P. O. B¨orjesson, “ML estimation of time and frequency offset in OFDM systems,” IEEE Trans. Signal Process. , vol. 45, no. 7, pp. 1800–1805, 1997.

J. A. C. Bingham, “Multicarrier modulation for data transmission: Anidea whose time has come,” IEEE Commun. Mag., vol. 28, pp. 5–14,May 1990.

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, pt. 1, pp. 191–193, Feb.–Apr. 1995.

J. J. van de Beek, M. Sandell, and P. O. B¨orjesson, “ML estimation of time and frequency offset in OFDM systems,” IEEE Trans . Signal Process. , vol. 45, no. 7, pp. 1800–1805, 1997.

Jianwu Chen, Yik-Chung Wu, Shaodan Ma, and Tung-Sang Ng, “ML Joint CFO and channel estimation in OFDM Systems with timing ambiguity,” IEEE Trans. commun, Vol. 7, no. 7, July 2008.

Hlaing Minn, Vijay K. Bhargava, and Khaled B. Letaief, “A combined timing and frequency synchronization and channel estimation for OFDM,” IEEE Trans. commun, Vol. 54, no. 3, March 2006.

Hlaing Minn, Vijay K. Bhargava, and Khaled B. Letaief, “A combined timing and frequency synchronization and channel estimation for OFDM,” IEEE Trans. commun, 2004.

F. Classen and H. Meyr, “Synchronization algorithms for an OFDMsystem for mobile communication,” ITG-Fachtagung, pp. 105–113, Oct.26–28, 1994.

T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans .Commun., vol. 45, no. 12, pp. 1613– 1621, 1997.

H. Minn, M. Zeng, and V. K. Bhargava, “On timing offset estimation for OFDM systems,” IEEE Commun. Lett., vol. 4, no. 7, pp. 242–244, 2000.

H. Minn, V. K. Bhargava, and K. B. Letaief, “A robust timing and frequency synchronization for OFDM systems,” IEEE Trans .Wireless Commun., vol. 2, no. 4, pp. 822–839, 2003.

B. Park and H. Cheon, “A Novel Timing Estimation Method for OFDM systems,” IEEE Commun. Lett., vol. 7, pp. 239 – 241, May 2003.

G. Ren, Y. Chang, H. Zhang, and H. Zhang, “Synchronization Method Based on a New Constant Envelop Preamble for OFDM Systems,” IEEE Trans. Broadcast., vol. 51, pp. 139–143, Mar. 2005.


Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.