OFDM channel estimation

Details OFDM channel estimation OFDM channel estimation

2008-01-11

2011-12-20

Payne, David C. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S259000

Reexamination Certificate

active

08081690

ABSTRACT:
A receiver for receiving an orthogonal frequency division multiplexed (OFDM) digital video broadcast (DVB) signal including OFDM symbol sets including data symbols and pilot symbols transmitted using a plurality of sub-carriers, the OFDM DVB signal being transmitted toward the receiver via a transmission channel, the receiver including an input processor configured to receive the OFDM DVB signal via the transmission channel and to perform a Fourier transform on the OFDM DVB signal to provide a frequency-domain signal, a channel estimation processor coupled to the input processor and configured to calculate final channel estimates, the channel estimation processor being configured to perform time-domain prediction on the frequency-domain signal to provide established sub-carriers that each have corresponding initial channel estimates, and perform minimum mean square error (MMSE) equalization on the frequency-domain signal using the initial channel estimates that correspond to a sub-set of the established sub-carriers to calculate the final channel estimates.

REFERENCES:
patent: 6330293 (2001-12-01), Klank et al.
patent: 7453793 (2008-11-01), Jones et al.
patent: 2004/0264561 (2004-12-01), Alexander et al.
patent: 2005/0105593 (2005-05-01), Dateki et al.
patent: 2006/0133529 (2006-06-01), Lee et al.
patent: 2007/0098090 (2007-05-01), Ma et al.
patent: 2007/0211747 (2007-09-01), Kim
patent: 2007/0268976 (2007-11-01), Brink et al.
patent: 2008/0152018 (2008-06-01), Ma et al.
patent: 2008/0219371 (2008-09-01), Hong et al.
patent: 2009/0086841 (2009-04-01), Guo et al.
patent: 2009/0103666 (2009-04-01), Zhao et al.
patent: 2010/0002817 (2010-01-01), Vrcelj et al.
patent: 2010/0034302 (2010-02-01), Filippi et al.
Athaudage et al., “Enhanced MMSE Channel Estimation Using Timing Error Statistics for Wireless OFDM Systems”, IEEE Transactions on Broadcasting, 50(4):369-376, (Dec. 2004).
Chen et al., “Intercarrier Interference Suppression and Channel Estimating for OFDM Systems in Time-Varying Frequency-Selective Fading Channels”, IEEE Transactions on Consumer Electronics, 50(2):429-435, (May 2004).
Choi et al., “On Channel Estimation and Detection for Multicarrier Signals in Fast and Selective Rayleigh Fading Channels”, IEEE Transactions on Communications, 49(8):1373-1387, (Aug. 2001).
Edfors et al., “OFDM Channel Estimation by Singular Value Decomposition”, IEEE Transactions on Communications, 46(7):931-939, (Jul. 1998).
European Telecommunications Standards Institute, “Digital Video Broadcasting (DVB); Transmission System for Handheld Terminals (DVB-H)”, ETSI EN 302 304 V1.1.1, (Nov. 2004).
Fischer et al., “ICI Reduction Method of OFDM Systems”, 8thInternational OFDM-Workshop 2003 (InOWo'03).
Gorokhov, “Robust OFDM Receiers for Dispersive Time-Varying Channels: Equalization and Channel Acquisition”, IEEE Transactions on Communications, 52(4):572-583, (Apr. 2004).
Hoeher et al., “Two-Dimensional Pilot-Symbol-Aided Channel Estimation by Wiener Filtering”, ICASSP 1997, 3:1845-1848, (Apr. 1997).
Jeon et al., “An Equalization Technique for Orthogonal Frequency-Division Multiplexing Systems in Time-Variant Multipath Channels”, IEEE Transactions on Communications, 47(1):27-32, (Jan. 1999).
Li et al., “A Low-Complexity Equalization Technique for OFDM Systems in Time-Variant Multipath Channels”, VTC 2003-Fall, 4:2466-2470, (Oct. 2003).
Li et al., “Robust Channel Estimation for OFDM Systems With Rapid Dispersive Fading Channels”, IEEE Transactions on Communications, 46(7):902-915, (Jul. 1998).
Mostifi et al., “ICI Mitigation for Mobile OFDM Receivers”, ICC 2003, 5:3351-3355, (May 2003).
Necker et al., “An Adaptive Wiener-Filter for Improved Channel Estimation in Mobile OFDM-Systems”, IEEE International Symposium on Signal Processing and Information Technology, ISSOIT 2001, pp. 213-216, (Cairo, 2001).
Schniter, “Low-Complexity Equalization of OFDM in Doubly Selective Channels”, IEEE Transactions on Signal Processing, 52(4):1002-1011, (Apr. 2004).
Schober et al., “Adaptive Channel Estimation for OFDM Based Hih Speed Mobile Communication Systems”, 2001 International Conference on Third Generation Wireless and Beyond, pp. 392-397, (2001).
Song et al., “Pilot-Symbol Aided Channel Estimation for OFDM with Fast Fading Channels”, IEEE Transactions on Broadcasting, 49(4):398-402, (Dec. 2003).
Stamoulis et al., “Intercarrier Interference in MIMO OFDM”, IEEE Transactions on Signal Processing, 50(10):2451-2464, (Oct. 2002).
Tomasin et al., “Iterative Interference Cancellation and Channel Estimation for Mobile OFDM”, IEEE Transactions on Wireless Communications, 4(1):238-245, (Jan. 2005).

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