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Quasi-Newton based Kalman Filter Channel Estimation for OFDM Systems
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- Authors
- Seung Hyun Nam, Hee Wook Kim, Kun Seok Kang, Do Seob Ahn, Ho Jin Lee
- Issue Date
- 2010-01
- Citation
- International Conference on Consumer Electronics (ICCE) 2010, pp.1-2
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, Kalman filter method has been used for the estimate of time variant channels in OFDM systems. The estimation is based on Comb- type pilot in frequency domain. The channel coefficients that belong to the pilot subcarriers are estimated by Kalman filter. To reduce complexity, quasi-Newton methods are adapted for updating the gain of Kalman filter. Then, we can estimate channel parameter except for the inverse matrix which needs high complexity by using quasi-Newton methods. ©2010 IEEE.
- KSP Keywords
- Belong to, Channel Coefficients, Channel estimation(CE), Channel parameters, Frequency domain(FD), Inverse matrix, Kalman filter method, Newton-Raphson method(Newton method), OFDM systems, Quasi-Newton methods, time-variant