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Conference Paper
Reliable Blind Channel Estimation Scheme based on Cross-Correlated Cyclic Prefix for OFDM System
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- Authors
- Tae Joon Kim, Ik Soo Eo
- Issue Date
- 2006-02
- Citation
- International Conference on Advanced Communication Technology (ICACT) 2006, pp.3-5
- Language
- English
- Type
- Conference Paper
- Project Code
- 05MB4600, Development of Low Power Modem Core IP for mobile, Hee-Bum Jung
- Abstract
- This paper proposes an efficient and reliable blind channel estimation method for single transmitter and receiver antenna orthogonal frequency division multiplexing (OFDM) system. The proposed blind channel estimation method is based on the interesting cross-correlation property of the repeated structure of cyclic prefix (CP) in an OFDM symbol. Our cross-correlation based method, which utilizes the only information in CP, not entire symbol, is robust to additive white noise and not affected from the presence of null channel coefficients. Toeplitz structure induced in the cross-correlation matrix allows us a simple and reliable method for extracting channel impulse response effectively. In the simulation study, proposed method is compared with auto-correlation based approach and it demonstrate the superior performance of the proposed method.
- KSP Keywords
- Additive white noise, Auto-Correlation, Based Approach, Blind channel estimation, Channel Coefficients, Channel estimation(CE), Cross-correlation matrix(CCM), Cyclic prefix(CP), Estimation method, Orthogonal frequency division multiplexing (OFDM) system, Receiver antenna