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ICI Cancellation Based Channel Estimation for OFDM Systems
White Paper This paper proposes a novel frequency-domain channel estimator, which mitigates the effects of ICI by jointly finding the frequency offset and channel frequency response (CFR). The loss of orthogonality among subcarriers... [11 Apr 2008]
Evaluating Wireless Carrier Consolidation Using Semiparametric Demand Estimation
White Paper The semiparametric maximum score estimator controls for consumers' heterogeneous preferences for carriers, handsets and minutes of calling time. The US mobile phone service industry has dramatically consolidated over the... [31 Aug 2007]
Evaluating Wireless Carrier Consolidation Using Semiparametric Demand Estimation
White Paper The semiparametric maximum score estimator controls for consumers' heterogeneous preferences for carriers, handsets and minutes of calling time. The US mobile phone service industry has dramatically consolidated over the... [10 Aug 2007]
Successive Slepian Subspace Projection in Time and Frequency for Time-Variant Channel Estimation
White Paper This paper describes an iterative time-variant channel estimator for the uplink of a Multi-Carrier Code Division Multiple Access (MC-CDMA) system. MC-CDMA is based on Orthogonal Frequency Division... [18 Apr 2007]
An Efficient Frequency Offset Estimator for Timing and Frequency Synchronization in OFDM Systems
White Paper Key features of the proposed method are presented in terms of missing probability and estimation error variance of the carrier frequency offset estimator in AWGN and frequency selective fading channels. [18 Apr 2007]
An Efficient Frequency Offset Estimator for OFDM Systems and Its Performance Characteristics
White Paper While the timing synchronization is obtained by using the conventional method, the carrier frequency offset is efficiently estimated by the proposed method. This paper proposes new frequency synchronization algorithm for... [14 Apr 2007]
Coarse Frame and Carrier Synchronization of OFDM Systems: A New Metric & Comparison
White Paper A modified carrier estimator that can correct frequency offsets up to two subcarrier spacings is also proposed. This paper proposes a fast and reduced complexity frame and carrier... [13 Apr 2007]
Maximum-Likelihood Carrier Frequency Offset Estimation for OFDM Systems in Fading Channels
White Paper Apart from improved accuracy, the time-domain maximum likelihood estimator features significantly reduced complexity. Carrier Frequency Offset (CFO) is a major contributor to the... [13 Apr 2007]
A Blind Frequency Offset Estimator for OFDM/OQAM Systems
White Paper A new blind carrier frequency estimator is introduced herein for OFDM- /OQAM systems by exploiting the non-circularity of the received signal. Since the received signal exhibits conjugate cyclic... [11 Apr 2007]
Estimation of Wiener Phase Noise by the Autocorrelation of the ICI Weighting Function in OFDM Systems
White Paper Based on this kernel, a pilot-aided decision-directed CPE estimator is proposed according to maximum-likelihood criterion. Performance degradation due to Wiener phase noise which causes both Common Phase Error (CPE) and... [11 Apr 2007]
A Fine Blind Frequency Offset Estimator for OFDM/OQAM Systems
White Paper In this paper, a new blind carrier frequency offset estimator is developed for OFDM/OQAM systems by exploiting the non-circularity of the received OFDM/OQAM signal. Since the received signal exhibits... [21 Jul 2005]
Blind Carrier Frequency Offset Estimation in SISO, MIMO, and Multiuser OFDM Systems
Relying on a kurtosis-type criterion, a low-complexity blind carrier frequency offset (CFO) estimator is developed for orthogonal frequency-division multiplexing (OFDM) systems. The paper demonstrates... [30 Mar 2005]
Low-Complexity Nonlinear Least Squares Carrier Offset Estimator for OFDM: Identifiability, Diversity and Performance
White Paper In this paper the nonlinear least squares (NLS) estimator is derived for carrier frequency synchronization that exploits receiver diversity and known OFDM signal subspace structure due to the placement... [02 Nov 2004]
Experimental and Analytical Studies on a High-Resolution OFDM Carrier Frequency Offset Estimator
White Paper Insights obtained from these experiments provided the motivation to explore the fundamental relationships between estimator performance and multiple system parameters such as the signal-to-noise ratio, number of data... [02 Nov 2004]
OFDM Blind Carrier Offset Estimation: ESPRIT
White Paper This paper exploits the intrinsic structure information of OFDM signals to derive a carrier offset estimator that offers the accuracy of a super resolution subspace method, ESPRIT. In orthogonal... [02 Nov 2004]
