Wireless LAN White Papers
Joint Estimation of Channel Response, Frequency Offset, and Phase Noise in OFDM
Overview Accurate channel estimates are needed in Orthogonal Frequency-Division Multiplexing (OFDM), and easily obtained under the assumption of perfect phase and frequency synchronization. However, the practical receiver encounters nonnegligible PHase Noise (PHN) and Carrier Frequency Offset (CFO), which create substantial intercarrier interference that a conventional OFDM channel estimator cannot account for. This paper introduces an optimal (maximum a posteriori) joint estimator for the Channel Impulse Response (CIR), CFO, and PHN, utilizing prior statistical knowledge of PHN that can be obtained from measurements or data sheets.
| Publisher | Institute of Electrical and Electronics Engineers | File Format | |
|---|---|---|---|
| Date Published | September 2006 | Downloads | 12 |
| Format | White Papers | ||
| Topics | |||
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