상세정보
학술지
Timing Estimation for OFDM Systems by Using a Correlation Sequence of Preamble
- 발행일
- 200811
- 출처
- IEEE Transactions on Consumer Electronics, v.54 no.4, pp.1600-1608
- ISSN
- 0098-3063
- 출판사
- IEEE
- 초록
- In this paper, we propose a novel timing estimation method for orthogonal frequency division multiplexing (OFDM) systems. The most common approaches in estimating timing use correlation by using a given preamble. Thus, the estimation performance is directly dependent on the specific preamble type. The proposed algorithm estimates the timing by using a simple circular shift operation of the given preamble at the receiver. For this reason, the proposed method can be used for any of the OFDM systems regardless of their preamble structures. The simulation results investigated in this paper reveal that the proposed method remarkably increases the estimation performance by more than 5 dB in terms of the mean squared error compared to conventional methods. We also consider the computational complexity of the methods and introduce a simple structure to reduce the computational burden of the proposed method. © 2008 IEEE.
- KSP 제안 키워드
- Circular shift, Computational complexity, Conventional methods, Estimation method, OFDM systems, Orthogonal frequency division Multiplexing(OFDM), Shift Operation, Timing estimation, computational burden, estimation performance, mean square error(MSE)