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Volume 32 Issue 10
Dec.  2010
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Ge Li-Jun, Zhao Ying-Xin, Wu Hong, Jin Yu-Ang. Timing Algorithm Based on Maximum Autocorrelation and Minimum Energy Ratio for MB-OFDM-UWB Systems[J]. Journal of Electronics & Information Technology, 2010, 32(10): 2452-2457. doi: 10.3724/SP.J.1146.2009.01385
Citation: Ge Li-Jun, Zhao Ying-Xin, Wu Hong, Jin Yu-Ang. Timing Algorithm Based on Maximum Autocorrelation and Minimum Energy Ratio for MB-OFDM-UWB Systems[J]. Journal of Electronics & Information Technology, 2010, 32(10): 2452-2457. doi: 10.3724/SP.J.1146.2009.01385

Timing Algorithm Based on Maximum Autocorrelation and Minimum Energy Ratio for MB-OFDM-UWB Systems

doi: 10.3724/SP.J.1146.2009.01385
  • Received Date: 2009-10-26
  • Rev Recd Date: 2010-06-18
  • Publish Date: 2010-10-19
  • This paper presents an intact scheme of timing synchronization for the Multi-Band OFDM (MB-OFDM) Ultra Wide Band (UWB) system adopted by IEEE 802.15.3a proposal and ECMA-368 standard. The scheme is determined through algorithm improvement and simulation. Frame detection and coarse timing are implemented with the Maximum Correlation (MC) method based on the first-band information of the preamble. Fine timing is achieved with the minimum energy ratio method based on the information of all the three bands. Besides, revision of the timing position is performed twice that performance of the algorithm is guaranteed. Simulations show that residual timing error can be kept at a small scale which can be compensated with channel in frequency domain. And else, the scheme has a low complexity.
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  • [1] [1] IEEE Std. Multi-band OFDM physical layer proposal for IEEE 802.15 Task Group 3a[S]. 2004. [2] [2] ECMA Std. High rate ultra wideband PHY and MAC standard[S]. 2005. [3] 李平,赵志辉,张振仁. OFDM系统建模仿真及同步偏差分析[J].系统仿真学报.2007, 19(13):3042-3046 Li Ping, Zhao Zhi-hui, and Zhang Zhen-ren. Simulation of OFDM system model and synchronization errors analysis[J]. Journal of System Simulation, 2007, 19(13): 3042-3046. [4] Wang Yue and Dong Xiao-dai. Comparison of frequency offset and timing offset effects on the performance of SC-FDE and OFDM over UWB channels[J].IEEE Transactions on Vehicular Technology.2009, 58(1):242-250 [5] Minn H, Bhargava V, and Letaief K. A robust timing and frequency synchronization for OFDM systems[J]. IEEE Transactions on Wireless Communications, 2003, 2(4): 822-839. [6] Minn H, Bhargava V, and Letaief K. A combined timing and frequency synchronization and channel estimation for OFDM[J].IEEE Transactions on Communications.2006, 54(3):1081-1096 [7] Berger C R, Zhou Sheng-li, and Tian Zhi, et al.. Performance analysis on an MAP fine timing algorithm in UWB Multiband OFDM[J].IEEE Transactions on Communications.2008, 56(10):1606-1611 [8] 李长青,刘丹谱,乐光斯. UWB-OFDM系统的符号盲同步方法[J].电子与信息学报.2007, 29(8):1895-1899浏览 Li Chang-qing, Liu Dan-pu, and Yue Guang-xin. A robust blind symbol-timing synchronization for UWB-OFDM systems[J].Journal of Electronics Information Technology.2007, 29(8):1895-1899 [9] Li Y, Minn H, and Rajatheva R M A P. Synchronization, channel estimation, and equalization in MB-OFDM Systems[J].IEEE Transactions on Wireless Communications.2008, 7(11):4341-4352 [10] Muquet B, Wang Z, and Giannakis G, et al.. Cyclic prefixing or zero padding for wireless multicarrier transmisions?[J].IEEE Transactions on Communications.2002, 50(12):2136-2148
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