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Conference Paper
Channel estimation and equalization for high speed mobile OFDM systems
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- Authors
- Heejung Yu, Myung-Soon Kim, Sok-Kyu Lee
- Issue Date
- 2003-11
- Citation
- Asilomar Conference on Signals, Systems and Computers (ACSSC) 2003, pp.693-697
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we propose new channel estimation and equalization techniques for OFDM (Orthogonal Frequency Division Multiplexing) systems in mobile environments. In the mobile OFDM system, the estimation of the time-varying channel is the most important issue. In the proposed method, we assume that wireless channels are varying in a linear fashion during a certain time interval, and estimate the initial channel coefficients and their corresponding slopes. After such estimation, we compensate for the estimated channel and ICI (Inter-Carrier Interference) effects due to time selectivity. We verify that this scheme shows better performance than conventional methods using computer simulations.
- KSP Keywords
- Channel Coefficients, Channel estimation(CE), Channel estimation and equalization, Computer simulation(MC and MD), Conventional methods, Equalization techniques, High Speed, Intercarrier interference(ICI), Mobile OFDM systems, Orthogonal frequency division Multiplexing(OFDM), Time interval