New Blind Adaptive Channel Estimation Schemes Based on OFDM Systems
| Autor: | Han Ying Hu, Guo Jun Chen |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Estimation
Orthogonal frequency-division multiplexing General Engineering Signal Power (physics) Least mean squares filter Convergence (routing) ComputingMilieux_COMPUTERSANDEDUCATION Electronic engineering Hardware_ARITHMETICANDLOGICSTRUCTURES Decorrelation Algorithm Mathematics Communication channel |
| Zdroj: | Advanced Materials Research. 709:370-373 |
| ISSN: | 1662-8985 |
| Popis: | Two new blind estimation schemes based on decorrelation LMS（DLMS）and time-domain orthogonal LMS（TDO-LMS） algorithms are proposed to solve the problem of convergence in the estimation scheme based on LMS algorithm in wireless mobile communication OFDM systems. These schemes are improved on the traditional LMS algorithm.The factor of TDO-LMS algorithm changes along with the power of signal ,and the decorrelation LMS removes the correlation of the signal.Two methods can get faster convergence and better estimation performance combining with alterable step in the channel estimation of OFDM systems.Simulation shows that the convergence of the schemes proposed is better than that in the channel estimation based on the traditional LMS algorithm obviously. |
| Databáze: | OpenAIRE |
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