6980592

6980592

März Frankfurt/Main. Stefan Kießling denkt auch nach der erneuten Absage von Joachim Löw nicht an einen Rücktritt aus der deutschen. Aug. Am Sonntagnachmittag um 15 Uhr war ein jähriger Rentner mit seinem Motorrad auf der Staatstraße zwischen Gauaschach und dem. USB1 * Agere Systems Inc. Digital adaptive equalizer for T1/E1 long haul transceiver. JPA * Entzerrer nach Anspruch 8, dadurch gekennzeichnet, dass die Schaltung ; , zur Berechnung einer Kreuzcorrelation folgendes enthält: Method and apparatus for channel identification using incomplete or noisy information. All prices contain the Vat tax. Entsprechend dem Viterbi-Detektor nach Fig. Modems, methods, and computer program products for falling back to a lower data rate protocol upon detecting abnormal line conditions during startup. We always reply within 24 hours. Digital modulation signal receiver with adaptive channel equalization employing discrete fourier transforms. We offer only new products. Vorrichtung und verfahren zur erkennung der welligkeiten verursacht durch mehrwegeausbreitung und zur steuerung der empfangsantenne und des tuners. Immer werden wir eine beste Lösung finden. Bitte geben Sie eine Nummer ein, die kleiner oder gleich 9 ist. Severe error detectors, methods and computer program products that use constellation specific error event thresholds to detect severe error events during demodulation of a signal comprising symbols from a plurality of symbol constellations.

6980592 -

Method and apparatus for channel identification using incomplete or noisy information. Das Lieferdatum — wird in einem neuen Fenster oder Reiter geöffnet bezieht sich auf einen Zahlungseingang z. Modems, methods, and computer program products for falling back to a lower data rate protocol upon detecting abnormal line conditions during startup. Der Betrag kann sich bis zum Zahlungstermin ändern. Verpflichtungen zur Erstattung von Zahlungen müssen innerhalb von 30 Tagen erfüllt werden. Ihre Beobachtungsliste ist voll. Verfahren zur Parametrierung einer Empfangseinrichtung, sowie entsprechende Empfangseinrichtung und Funkstation. Bei einem späteren Zahlungseingang — wird in einem neuen Fenster oder Reiter geöffnet verschiebt sich das Lieferdatum entsprechend. Wenn sind Sie nicht ganz zufrieden oder Sie haben ein Problem, bitte informieren Sie uns über diesen Zufall.

A T1 type signal 1. An E1 type signal 2. However, because of the similarities in the data structure and physical layer characteristics of T1 and E1 lines, many commercial components are capable of supporting either a T1 or an E1 standard, often with a bit setting or swap of a termination impedance.

The transmission path e. Thus, a conventional analog equalizer is chosen or designed based on the specific type of cable used, and on the specific length of the cable.

Conventional analog devices are typically designed with the specific cable type and sometimes even the length of the cable in mind. This poses delays and reliability issues when changes to a system are incurred, e.

In accordance with the principles of the present invention, a digital adaptive equalizer for a data communication path comprises a first programmable filter capable of being programmed to implement any of a plurality of filter transfer functions.

A filter selector selects any one of the plurality of filter transfer functions for the first programmable filter. A second digital filter receives an output from the first programmable filter.

Features and advantages of the present invention will become apparent to those skilled in the art from the following description with reference to the drawings, in which:.

The digital adaptive equalizer contains two filter blocks, i. The IIR filter receives the digitized samples of a received analog signal e.

Preferably, the IIR includes a programmable set of coefficients, wherein each programmable set of coefficients represents a different IIR filter.

The particular set of coefficients to be programmed and thus the particular IIR filter is chosen, e. The error estimation algorithm detects which IIR filter would be optimum for use given a current set of conditions.

The error estimation algorithm may be operated as often as necessary, e. A filter selector block selects a desired set of coefficients corresponding to the best IIR filter.

The coefficients may be programmed into volatile memory e. Alternatively, the coefficients may be hardwired into the IIR filter. The back end of the digital adaptive equalizer contains an adaptive finite impulse response FIR filter.

In the disclosed embodiment, the FIR filter uses a least mean square LMS algorithm for adaptation to the unknown or changed T1 or E1 transmission channel or medium.

A restored T1 or E1 signal is output from the FIR filter, and thus from the digital adaptive equalizer, in accordance with the principles of the present invention.

In particular, in FIG. The front end includes an analog portion a and a digital portion b. The principles of the present invention relate equally to data transmission techniques and data rates other than those specifically at T1 or E1 rates.

In the case of a T1 i. Similarly, in the case of an E1 i. Of course, the present invention relates equally to sample sizes other than those of the disclosed exemplary embodiment, e.

An interpolator in the digital portion b of the front end interpolates the signals from the equalizer into an interpolated output signal having a much faster output sampling rate.

For example, the exemplary interpolator interpolates and outputs samples at 96 times the T1 or E1 rate i. The output of the interpolator is passed to a timing recovery stage to achieve the requirements e.

In particular, the digital adaptive equalizer includes an infinite impulse response IIR filter , followed by a filter selector , and then by a finite impulse response FIR filter The IIR filter in the disclosed embodiment is a 7 th order filter.

The IIR filter effectively opens the signal eye-diagram of the received digitized data signal. The filter selector selects the optimum IIR filter, and programs the related coefficients into the IIR filter based on that selection.

The filter selector also performs timing and process control for the equalizer , and converts the 9-bit output from the IIR filter into 8-bit samples for use by the FIR filter The adaptive FIR filter includes a finite impulse response filter having, e.

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6980592 Video

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An E1 type signal 2. However, because of the similarities in the data structure and physical layer characteristics of T1 and E1 lines, many commercial components are capable of supporting either a T1 or an E1 standard, often with a bit setting or swap of a termination impedance.

The transmission path e. Thus, a conventional analog equalizer is chosen or designed based on the specific type of cable used, and on the specific length of the cable.

Conventional analog devices are typically designed with the specific cable type and sometimes even the length of the cable in mind. This poses delays and reliability issues when changes to a system are incurred, e.

In accordance with the principles of the present invention, a digital adaptive equalizer for a data communication path comprises a first programmable filter capable of being programmed to implement any of a plurality of filter transfer functions.

A filter selector selects any one of the plurality of filter transfer functions for the first programmable filter.

A second digital filter receives an output from the first programmable filter. Features and advantages of the present invention will become apparent to those skilled in the art from the following description with reference to the drawings, in which:.

The digital adaptive equalizer contains two filter blocks, i. The IIR filter receives the digitized samples of a received analog signal e. Preferably, the IIR includes a programmable set of coefficients, wherein each programmable set of coefficients represents a different IIR filter.

The particular set of coefficients to be programmed and thus the particular IIR filter is chosen, e. The error estimation algorithm detects which IIR filter would be optimum for use given a current set of conditions.

The error estimation algorithm may be operated as often as necessary, e. A filter selector block selects a desired set of coefficients corresponding to the best IIR filter.

The coefficients may be programmed into volatile memory e. Alternatively, the coefficients may be hardwired into the IIR filter. The back end of the digital adaptive equalizer contains an adaptive finite impulse response FIR filter.

In the disclosed embodiment, the FIR filter uses a least mean square LMS algorithm for adaptation to the unknown or changed T1 or E1 transmission channel or medium.

A restored T1 or E1 signal is output from the FIR filter, and thus from the digital adaptive equalizer, in accordance with the principles of the present invention.

In particular, in FIG. The front end includes an analog portion a and a digital portion b. The principles of the present invention relate equally to data transmission techniques and data rates other than those specifically at T1 or E1 rates.

In the case of a T1 i. Similarly, in the case of an E1 i. Of course, the present invention relates equally to sample sizes other than those of the disclosed exemplary embodiment, e.

An interpolator in the digital portion b of the front end interpolates the signals from the equalizer into an interpolated output signal having a much faster output sampling rate.

For example, the exemplary interpolator interpolates and outputs samples at 96 times the T1 or E1 rate i. The output of the interpolator is passed to a timing recovery stage to achieve the requirements e.

In particular, the digital adaptive equalizer includes an infinite impulse response IIR filter , followed by a filter selector , and then by a finite impulse response FIR filter The IIR filter in the disclosed embodiment is a 7 th order filter.

The IIR filter effectively opens the signal eye-diagram of the received digitized data signal. The filter selector selects the optimum IIR filter, and programs the related coefficients into the IIR filter based on that selection.

The filter selector also performs timing and process control for the equalizer , and converts the 9-bit output from the IIR filter into 8-bit samples for use by the FIR filter The adaptive FIR filter includes a finite impulse response filter having, e.

In the disclosed embodiment, the adaptive FIR filter utilizes a least mean squares LMS fit, and completes the equalization of the input data samples.

Der Verkäufer ist für dieses Angebot verantwortlich. Cross polarization interference compensating device comprising decision feedback cross polarization interference cancellers. Severe error detectors, methods and computer program products that use constellation specific error event thresholds to detect severe error events during demodulation of a signal comprising symbols from a plurality of symbol constellations. Die vier neuesten bits bei einer digitalen Auswertung beschreiben den neuen Zustand der Dekodierung. Es ware nett sein für eine positive Bewertung. When we will receive the parcel back next spielautomaten verbot we send money by paypal. Auf Twitter teilen wird in einem neuen Fenster oder Reiter geöffnet. Customers who have a current European tax number can parship kostenlose from us without VAT! Leider konnten wir zur Zeit keine Abfahrtsdaten casino online spielen kostenlos ohne anmeldung Pahlen ermitteln. Bitte geben Sie eine niedrigere Zahl ein.

6980592 -

Bei einem späteren Zahlungseingang — wird in einem neuen Fenster oder Reiter geöffnet verschiebt sich das Lieferdatum entsprechend. Vorteilhafte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen. Verbindung ab Chall, Pahlen berechnen. Wir senden die Waren nach Europa und ganze Welt. Zeitveränderliche Kanäle sind Kanäle über die Informationen übertragen werden, wobei sich die Übertragungsbedingungen zeitabhängig verändern. Der Widerruf ist zu richten an: Der Offset-Wert beschreibt einen den Kanalkoeffizienten gemeinsamen Modellparameter, der z.

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