S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Journal Papers (저널논문_전기·정보공학부)
Joint Channel Estimation and Phase Noise Suppression for OFDM Systems
- Kim, Yong-Hwa; Kim, Seong-Cheol
- Issue Date
- IEICE Trans. Commun., vol.E91-B, no.10, pp.3371-3374, Oct. 2008
- maximum-likelihood; minimum mean square error; orthogonal frequency-division multiplexing (OFDM); phase noise (PHN)
- Phase noise (PHN) can cause the common phase error (CPE) and the inter-carrier interference (ICI), both of which impair the accurate channel estimation in orthogonal frequency division multiplexing (OFDM) systems. In this letter, we build a new signal model parameterized by the channel impulse response, the CPE and the ICI. Based on this model, we derive the maximum likelihood estimator (MLE) and the minimum mean square error estimator (MMSEE). Simulation results show that the proposed schemes significantly improve the performance of OFDM systems in the presence of PHN.
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