一种用于OFDM符号定时跟踪的盲估计算法
A Blind Estimation of Symbol Timing Tracking Algorithm for OFDM
-
摘要: 利用具有循环前缀和循环后缀的OFDM帧结构，该文提出了一种新的符号定时跟踪盲估计算法。理论分析及仿真表明，无论在AWGN还是多径衰落信道条件下，该定时算法估计的均方差都小于ML算法。Abstract: A new blind symbol timing-tracking algorithm is proposed, using the special OFDM frame structure with cyclic prefix and cyclic postfix. Analysis and simulation results show that the mean square error of timing offset estimation for proposed method is superior to that of Maximum Likelihood (ML) method.
-
Win M Z, Scholtz R A. Impulse radio: how it works[J].IEEE Commun. Lett.1998, 2(2):36-38[2]Win M Z, Scholtz R A. Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications[J].IEEE Trans. on Commun.2000, 48(4):679-689[3]Alamouti S M. A simple transmit diversity technique for wireless communications. IEEE J.on Select. Areas Commun., 1998, 12: 1451-1458.[4]Tarokh V, Jafarkhani H, Calderbank A R. Space-time block codes from orthogonal designs[J].IEEE Trans. on Inform. Theory.1999, 45( 7):1456-1467[5]Yang L, Giannakis G B. Analog space-time coding for Multiantenna ultra-wideband transmissions[J].IEEE Trans. on Commun.2004, 52(3):507-517[6]Baccarelli E, Biagi M. A novel multi-antenna impulse radio UWB transceiver for broadband high-throughput 4G WLANS[J].IEEE Commun. Lett.2004, 8(7):419-421[7]Scholtz R Z. Multiple access with time-hopping impulse modulation. IEEE MILCOM, Boston, MA, Oct. 11-14, 1993, 447-450.[8]Roy S Li C. A subspace blind channel estimation method for OFDM systems without cyclic prefix[J].IEEE Trans. on Wireless Commun.2002, 1(10):572-579[9]Moulines E, Duhamel P, Cardoso J, Mayrargue S. Subspace methods for the blind identification of multichannel FIR filters[J].IEEE Trans. on Signal Processing.1995, 43(2):516-525 -
计量
- 文章访问数: 2111
- HTML全文浏览量: 117
- PDF下载量: 819
- 被引次数: 0
下载:
