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Patent

Image-rejecting channel estimator, method of image-rejection channel estimating and an OFDM receiver employing the same

Charles Sestok, +2 more
TLDR
In this article, an image-rejecting channel estimator for OFDM receivers employing scattered pilot channel estimates is presented, which includes an estimation interpolator configured to provide channel estimates through time interpolation and frequency interpolation.
Abstract: 
The present invention provides an image-rejecting channel estimator for use with an orthogonal frequency division multiplex (OFDM) receiver employing scattered pilot channel estimates. In one embodiment, the image-rejecting channel estimator includes an estimation interpolator configured to provide channel estimates through time interpolation and frequency interpolation employing the scattered pilot channel estimates. The image-rejecting channel estimator also includes an image-rejection formatter coupled to the estimation interpolator and configured to provide image-rejection filtering to suppress an image in an output spectrum of the channel estimates from at least one of the time interpolation and frequency interpolation.

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Patent

Base station and mobile station

Yoshiaki Ofuji, +2 more
TL;DR: In this article, a scheduling unit is configured to assign either the resource blocks or the distributed type resource blocks to mobile stations at a predefined assignment cycle based on respective downlink reception channel states transmitted from the mobile stations.
Patent

Channel estimation for DVB-T2 demodulation using an adaptive prediction technique

Parveen K. Shukla, +3 more
TL;DR: In this paper, a method is described that includes receiving an orthogonal frequency division multiplexing (OFDM) modulated signal at a modulator, filtering the received modulated signals using a plurality of sets of filter coefficients with a linear predictor algorithm, and estimating a channel frequency response based on the filtering.
Patent

Interpolated channel estimation for mobile ofdm systems

M. Butussi, +1 more
TL;DR: In this article, a technique to detect aliases and correct the estimate of channel duration is proposed, which is optimized by an analysis that provides closed-form expressions of the false alarm and miss detection probabilities.
Patent

Channel Estimation Techniques for OFDM

Pan Zhengang, +3 more
TL;DR: In this paper, the first channel response estimate of the at least one pilot subcarrier in a first symbol was used to select a first weight matrix from a plurality of pre-generated weight matrices.
Patent

Method of processing signals and a signal processor

Cecilia Carbonelli, +1 more
TL;DR: In this paper, the authors proposed a method for estimating the first and second channel estimates of a multiple-carrier mobile communication system with at least two reference symbols of different types.
References
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Patent

Receiver and method for WLAN burst type signals

Junjie Zhu, +1 more
TL;DR: In this paper, a symbol timing apparatus for an OFDM receiver is described, where the correlation of corresponding samples of two received preamble symbols, one sample delayed a predetermined duration with respect to the other, and the maximum correlation value within a predetermined integration window, indicating the start of a symbol.
Patent

Low-distorted waveform generating method and waveform generator using the same

Yasuo Furukawa
TL;DR: In this paper, the amplitude and phase of the distortion canceling signal were determined based on the results of the Fourier transform analysis, which was then used to compute composite waveform data composed of a distortion cancellation signal and the fundamental frequency signal.
Proceedings ArticleDOI

Integration of a receiver front-end in multilayer ceramic integrated circuit (MCIC) technology

J. Estes, +2 more
TL;DR: In this paper, the integration of a major portion of a wireless radio receiver front-end into a single multilayer ceramic integrated circuits (MCIC) unit has been demonstrated.
Patent

Enhanced channel estimator, method of enhanced channel estimating and an OFDM receiver employing the same

Charles Sestok, +2 more
TL;DR: In this paper, an enhanced channel estimator for use with an orthogonal frequency division multiplex (OFDM) receiver employing scattered pilot channel estimates is presented. But the authors focus on the use of balanced error filtering for image suppression through balanced-error filtering.
Patent

Channel length estimation and accurate FFT window placement for high-mobility OFDM receivers in single frequency networks

Badri N. Varadarajan, +3 more
TL;DR: In this article, a method of estimating the channel length in a wireless receiver is described, where the receiver receives a signal ( 122 ) from a remote transmitter and selects a plurality (K) of different candidate channel lengths and determines a respective criterion value ( 402 ) of the signal for each of the plurality.